Synonyms of the word

fundament

• n. Foundation.
• n. The bottom; the buttocks or anus.
• n. The underlying basis or principle for a theoretical or mathematical system.

arse

• n. (dated in New England, current in Britain, Ireland, Australia, New Zealand, now slang) The buttocks or…
• n. (chiefly Britain, pejorative slang) A stupid, mean or despicable person.
• v. (slang, intransitive) To be silly, act stupid or mess around.

ass

• n. Any of several species of horse-like animals, especially Equus asinus africanus, often domesticated and…
• n. (slang) A stupid person.
• n. (vulgar, slang) Buttocks.
• n. (vulgar, slang, uncountable) Sex.
• n. (vulgar, slang) Anus.
• n. (slang) Used in similes to express something bad or unpleasant.
• n. (slang) Used after an adjective to indicate extremes or excessiveness.
• n. (slang) One's self or person, chiefly their body.

assumption

• n. The act of assuming, or taking to or upon oneself; the act of taking up or adopting.
• n. The act of taking for granted, or supposing a thing without proof; a supposition; an unwarrantable claim.
• n. The thing supposed; a postulate, or proposition assumed; a supposition.
• n. (logic) The minor or second proposition in a categorical syllogism.
• n. The taking of a person up into heaven.
• n. A festival in honor of the ascent of the Virgin Mary into heaven.
• n. (rhetoric) Assumptio.

backside

• n. The back side of anything, the part opposite its front, particularly.
• n. (figuratively) The reverse or opposite of anything.

base

• n. Something from which other things extend; a foundation.
• n. The starting point of a logical deduction or thought; basis.
• n. A permanent structure for housing military personnel and material.
• n. The place where decisions for an organization are made; headquarters.
• n. (cooking, painting, pharmacy) A basic but essential component or ingredient.
• n. A substance used as a mordant in dyeing.
• n. (cosmetics) Foundation: a cosmetic cream to make the face appear uniform.
• n. (chemistry) Any of a class of generally water-soluble compounds, having bitter taste, that turn red litmus…
• n. Important areas in games and sports.
• n. (architecture) The lowermost part of a column, between the shaft and the pedestal or pavement.
• n. (biology, biochemistry) A nucleotide's nucleobase in the context of a DNA or RNA biopolymer.
• n. (botany) The end of a leaf, petal or similar organ where it is attached to its support.
• n. (electronics) The name of the controlling terminal of a bipolar transistor (BJT).
• n. (geometry) The lowest side of a in a triangle or other polygon, or the lowest face of a cone, pyramid…
• n. (heraldry) The lowest third of a shield or escutcheon.
• n. (heraldry) The lower part of the field. See escutcheon.
• n. (mathematics) A number raised to the power of an exponent.
• n. (mathematics) Synonym of radix.
• n. (topology) The set of sets from which a topology is generated.
• n. (topology) A topological space, looked at in relation to one of its covering spaces, fibrations, or bundles.
• n. (acrobatics, cheerleading) In hand-to-hand balance, the person who supports the flyer; the person that…
• n. (linguistics) A morpheme (or morphemes) that serves as a basic foundation on which affixes can be attached.
• n. (music) Dated form of bass.
• n. (military, historical) The smallest kind of cannon.
• n. (archaic) The housing of a horse.
• n. (historical, in the plural) A kind of skirt (often of velvet or brocade, but sometimes of mailed armour)…
• n. (obsolete) The lower part of a robe or petticoat.
• n. (obsolete) An apron.
• n. A line in a survey which, being accurately determined in length and position, serves as the origin from…
• v. (transitive) To give as its foundation or starting point; to lay the foundation of.
• v. (transitive) To be located (at a particular place).
• v. (acrobatics, cheerleading) To act as a base; to be the person supporting the flyer.
• adj. (obsolete) Low in height; short.
• adj. Low in place or position.
• adj. (obsolete) Of low value or degree.
• adj. (archaic) Of low social standing or rank; vulgar, common.
• adj. Morally reprehensible, immoral; cowardly.
• adj. (now rare) Inferior; unworthy, of poor quality.
• adj. Designating those metals which are not classed as precious or noble.
• adj. Alloyed with inferior metal; debased.
• adj. (obsolete) Of illegitimate birth; bastard.
• adj. Not classical or correct.
• adj. Obsolete form of bass.
• adj. (law) Not held by honourable service.
• n. (now chiefly US, historical) The game of prisoners' bars.
• acr. Alternative form of BASE.

basis

• n. A starting point, base or foundation for an argument or hypothesis.
• n. An underlying condition or circumstance.
• n. A regular frequency.
• n. (linear algebra) In a vector space, a linearly independent set of vectors spanning the whole vector space.
• n. (accounting) Amount paid for an investment, including commissions and other expenses.
• n. (topology) A collection of subsets ("basis elements") of a set, such that this collection covers the set,…

behind

• prep. At the back of; positioned with something else in front of.
• prep. To the back of.
• prep. After, time- or motion-wise.
• prep. responsible for.
• prep. In support of.
• prep. Left a distance by, in progress or improvement; inferior to.
• adv. At the back part; in the rear.
• adv. Toward the back part or rear; backward.
• adv. Overdue, in arrears.
• adv. Slow; of a watch or clock.
• adv. existing afterwards.
• adv. Backward in time or order of succession; past.
• adv. Behind the scenes in a theatre; backstage.
• adv. (archaic) Not yet brought forward, produced, or exhibited to view; out of sight; remaining.
• n. the rear, back-end.
• n. butt, the buttocks, bottom.
• n. (Australian rules football) A one-point score.
• n. (baseball, slang, 1800s) The catcher.
• n. In the Eton College field game, any of a group of players consisting of two "shorts" (who try to kick…

bottom

• n. The lowest part from the uppermost part, in either of these senses.
• n. (uncountable, Britain, slang) Character, reliability, staying power, dignity, integrity or sound judgment.
• n. (Britain, US) A valley, often used in place names.
• n. The buttocks or anus.
• n. (nautical) A cargo vessel, a ship.
• n. (nautical) Certain parts of a vessel, particularly the cargo hold or the portion of the ship that is always…
• n. (baseball) The second half of an inning, the home team's turn to bat.
• n. (BDSM) A submissive in sadomasochistic sexual activity.
• n. (LGBT, slang) A man penetrated or with a preference for being penetrated during homosexual intercourse.
• n. (physics) A bottom quark.
• n. (often figuratively) The lowest part of a container.
• n. A ball or skein of thread; a cocoon.
• n. The bed of a body of water, as of a river, lake, or sea.
• n. An abyss.
• n. (obsolete) Power of endurance.
• n. (obsolete) Dregs or grounds; lees; sediment.
• v. To fall to the lowest point.
• v. To establish firmly; to found or justify on or upon something; to set on a firm footing; to set or rest…
• v. (intransitive) To rest, as upon an ultimate support; to be based or grounded.
• v. (intransitive) To reach or impinge against the bottom, so as to impede free action, as when the point…
• v. (obsolete, transitive) To wind round something, as in making a ball of thread.
• v. (transitive) To furnish with a bottom.
• v. To be the submissive in a BDSM relationship or roleplay.
• v. To be anally penetrated in gay sex.
• adj. The lowest or last place or position.

bum

• n. The buttocks.
• n. (Britain, Ireland, Australia, New Zealand, informal, rare, Canada, US) The anus.
• n. (by metonymy, informal) A person.
• v. (Britain, transitive, colloquial) To sodomize; to engage in anal sex.
• interj. (Britain) An expression of annoyance.
• n. (Canada, US, colloquial) A homeless person, usually a man.
• n. (Canada, US, colloquial, derogatory) a hobo.
• n. (Canada, US, Australia, colloquial) A lazy, incompetent, or annoying person, usually a man.
• n. (Canada, US, Australia, colloquial, sports) A player or racer who often performs poorly.
• n. (colloquial) A drinking spree.
• v. (transitive, colloquial) To ask someone to give one (something) for free; to beg for something.
• v. (intransitive, colloquial, pejorative) To behave like a hobo or vagabond; to loiter.
• v. (transitive, slang, Britain) To wet the end of a marijuana cigarette (spliff).
• adj. Of poor quality or highly undesirable.
• adj. Unfair.
• adj. Injured and without the possibility of full repair, defective.
• adj. Unpleasant.
• v. To depress; to make unhappy.
• n. (dated) A humming noise.
• v. (intransitive) To make a murmuring or humming sound.
• n. (obsolete) A bumbailiff.

buns

• n. plural of bun.
• n. (informal) buttocks.

butt

• n. (countable) The larger or thicker end of something; the blunt end, in distinction from the sharp or narrow…
• n. (countable) The waste end of anything.
• n. (countable, generally) An end of something, often distinguished in some way from the other end.
• n. (countable) A limit; a bound; a goal; the extreme bound; the end.
• v. To join at the butt, end, or outward extremity; to terminate; to be bounded; to abut.
• v. (transitive) To strike bluntly, particularly with the head.
• v. (intransitive) To strike bluntly with the head.
• n. A push, thrust, or sudden blow, given by the head; a head butt.
• n. A thrust in fencing.
• n. (English units) An English measure of capacity for liquids, containing 126 wine gallons which is one-half…
• n. A wooden cask for storing wine, usually containing 126 gallons.
• n. (Northern England) Any of various flatfish such as sole, plaice or turbot.
• n. (dated, West Country and Ireland) A heavy two-wheeled cart.
• n. (dated, West Country and Ireland) A three-wheeled cart resembling a wheelbarrow.

buttocks

• n. plural of buttock.

can

• v. (modal auxiliary verb, defective) To know how to; to be able to.
• v. (modal auxiliary verb, defective, informal) May; to be permitted or enabled to.
• v. (modal auxiliary verb, defective) To be possible, usually with be.
• v. (obsolete, transitive) To know.
• n. A more or less cylindrical vessel for liquids, usually of steel or aluminium.
• n. A container used to carry and dispense water for plants (a watering can).
• n. A tin-plate canister, often cylindrical, for preserved foods such as fruit, meat, or fish.
• n. (archaic) A chamber pot, now (US, slang) a toilet.
• n. (US, slang) A place with a toilet: a lavatory.
• n. (US, slang) Buttocks.
• n. (slang) Jail or prison.
• n. (slang) Headphones.
• n. (obsolete) A drinking cup.
• n. (nautical) A cube-shaped buoy or marker used to denote a port-side lateral mark.
• v. To preserve, by heating and sealing in a can or jar.
• v. to discard, scrap or terminate (an idea, project, etc.).
• v. To shut up.
• v. (US, euphemistic) To fire or dismiss an employee.

cornerstone

• n. A stone forming the base at the corner of a building.
• n. Such a stone used ceremonially, often inscribed with the architect's and owner's names, dates and other…
• n. (figuratively) That which is prominent, fundamental, noteworthy, or central.

derriere

• n. (humorous) bottom, bum.

fanny

• n. (Britain, Ireland, Australia, New Zealand, South Africa, vulgar) The female genitalia.
• n. (Canada, US, informal) The buttocks; arguably the most nearly polite of several euphemisms.
• n. (Britain, vulgar) Sexual intercourse with a woman.
• n. (Britain, vulgar) A woman, or women generally, as a sexual object(s).
• n. (Britain, naval slang) Mess kettle or cooking pot.

foot

• n. (countable) A biological structure found in many animals that is used for locomotion and that is frequently…
• n. (countable, anatomy) Specifically, a human foot, which is found below the ankle and is used for standing…
• n. (uncountable, often used attributively) Travel by walking.
• n. (countable) The base or bottom of anything.
• n. (countable) The part of a flat surface on which the feet customarily rest.
• n. (countable) The end of a rectangular table opposite the head.
• n. (countable) A short foot-like projection on the bottom of an object to support it.
• n. (countable) A unit of measure equal to twelve inches or one third of a yard, equal to exactly 30.48 centimetres.
• n. (countable, music) A unit of measure for organ pipes equal to the wavelength of two octaves above middle…
• n. (military, collective) Foot soldiers; infantry.
• n. (countable, cigars) The end of a cigar which is lit, and usually cut before lighting.
• n. (countable, sewing) The part of a sewing machine which presses downward on the fabric, and may also serve…
• n. (countable, printing) The bottommost part of a typed or printed page.
• n. (printing) The base of a piece of type, forming the sides of the groove.
• n. (countable, prosody) The basic measure of rhythm in a poem.
• n. (countable, phonology) The parsing of syllables into prosodic constituents, which are used to determine…
• n. (countable, nautical) The bottom edge of a sail.
• n. (countable, billiards) The end of a billiard or pool table behind the foot point where the balls are racked.
• n. (countable, botany) In a bryophyte, that portion of a sporophyte which remains embedded within and attached…
• n. (countable, malacology) The muscular part of a bivalve mollusc or a gastropod by which it moves or holds…
• n. (countable, molecular biology) The globular lower domain of a protein.
• n. (countable, geometry) The point of intersection of one line with another that is perpendicular to it.
• n. (uncountable) Fundamental principle; basis; plan.
• n. (uncountable) Recognized condition; rank; footing.
• v. (transitive) To use the foot to kick (usually a ball).
• v. (transitive) To pay (a bill).
• v. To tread to measure or music; to dance; to trip; to skip.
• v. To walk.
• v. To tread.
• v. (obsolete) To set on foot; to establish; to land.
• v. To renew the foot of (a stocking, etc.).
• v. To sum up, as the numbers in a column; sometimes with up.

foundation

• n. The act of founding, fixing, establishing, or beginning to erect.
• n. That upon which anything is founded; that on which anything stands, and by which it is supported; the…
• n. (figuratively) The result of the work to begin something; that which stabilizes and allows an enterprise…
• n. (card games) In solitaire or patience games, one of the piles of cards that the player attempts to build,…
• n. (architecture) The lowest and supporting part or member of a wall, including the base course and footing…
• n. A donation or legacy appropriated to support a charitable institution, and constituting a permanent fund;…
• n. That which is founded, or established by endowment; an endowed institution or charity.
• n. (cosmetics) Cosmetic cream roughly skin-colored, designed to make the face appear uniform in color and…
• n. A basis for social bodies or intellectual disciplines.

groundwork

• n. The foundation; the basic or fundamental parts that support or allow for the rest.

hindquarters

• n. plural of hindquarter.

keister

• n. (slang) The anus or buttocks.
• n. (slang, dated) A safe, a strongbox.
• n. (slang) A suitcase; a satchel.
• v. (slang) To conceal something in one's rectum.

nates

• n. (anatomy, medicine) The two anterior of the four lobes on the dorsal side of the midbrain of most mammals;…
• n. The buttocks.
• n. (zoology) The umbones of a bivalve shell.

posterior

• adj. Located behind, or towards the rear of an object.
• adj. Following in order or in time.
• adj. (anatomy) Nearer the back end; nearer the caudal end of the body in quadrupeds or the dorsal end in bipeds.
• adj. (botany) Next to, or facing the main stem or axis.
• n. (euphemistic) The buttocks.

prat

• n. (now Scotland) A cunning or mischievous trick; a prank, a joke.
• adj. (obsolete) Cunning, astute.
• n. (slang) A buttock, or the buttocks; a person's bottom.
• n. (Britain, slang) A fool.
• n. (slang) The female genitals.

rear

• v. (transitive) To bring up to maturity, as offspring; to educate; to instruct; to foster. ("Raise" is more…
• v. (transitive, said of people towards animals) To breed and raise. (Less common than "raise" in American…
• v. (intransitive) To rise up on the hind legs.
• v. (intransitive, usually with "up") To get angry.
• v. (intransitive) To rise high above, tower above.
• v. (transitive, literary) To raise physically or metaphorically; to lift up; to cause to rise, to elevate.
• v. (transitive, rare) To construct by building; to set up.
• v. (transitive, rare) To raise spiritually; to lift up; to elevate morally.
• v. (transitive, obsolete) To lift and take up.
• v. (transitive, obsolete) To rouse; to strip up.
• v. (transitive) To move; stir.
• v. (transitive, of geese) To carve.
• v. (regional, obsolete) To revive, bring to life, quicken. (only in the phrase, to rear to life).
• adj. (now chiefly dialectal) (of eggs) Underdone; nearly raw.
• adj. (chiefly US) (of meats) Rare.
• adj. Being behind, or in the hindmost part; hindmost.
• adv. (Britain, dialect) early; soon.
• n. The back or hindmost part; that which is behind, or last on order; - opposed to front.
• n. (military) Specifically, the part of an army or fleet which comes last, or is stationed behind the rest.
• n. (anatomy) The buttocks, a creature's bottom.
• v. To place in the rear; to secure the rear of.
• v. (transitive, vulgar, Britain) To sodomize (perform anal sex).

rump

• n. The hindquarters of an animal.
• n. A cut of meat from the rump of an animal.
• n. The buttocks.
• n. Remnant, as in rump parliament.

seat

• n. Something to be sat upon.
• n. A location or site.
• n. The starting point of a fire.
• n. Posture, or way of sitting, on horseback.
• v. (transitive) To put an object into a place where it will rest; to fix; to set firm.
• v. (transitive) To provide with places to sit.
• v. (transitive) To request or direct one or more persons to sit.
• v. (transitive, legislature) To recognize the standing of a person or persons by providing them with one…
• v. (transitive) To assign the seats of.
• v. (transitive) To cause to occupy a post, site, or situation; to station; to establish; to fix; to settle.
• v. (obsolete, intransitive) To rest; to lie down.
• v. To settle; to plant with inhabitants.
• v. To put a seat or bottom in.

stern

• adj. Having a hardness and severity of nature or manner.
• adj. Grim and forbidding in appearance.
• n. (nautical) The rear part or after end of a ship or vessel.
• n. (figuratively) The post of management or direction.
• n. The hinder part of anything.
• n. The tail of an animal; now used only of the tail of a dog.
• n. A bird, the black tern.

substructure

• n. The supporting part of a structure (either physical or organizational; the foundation).
• n. The earth or gravel that railway sleepers are embedded in.

support

• n. Something which supports. Often used attributively, as a complement or supplement to.
• n. Financial or other help.
• n. Answers to questions and resolution of problems regarding something sold.
• n. (mathematics) in relation to a function, the set of points where the function is not zero, or the closure…
• n. (fuzzy set theory) A set whose elements are at least partially included in a given fuzzy set (i.e., whose…
• n. Evidence.
• n. (computing) Compatibility and functionality for a given product or feature.
• n. (gymnastics) Clipping of support position.
• v. (transitive) To keep from falling.
• v. (transitive) To answer questions and resolve problems regarding something sold.
• v. (transitive) To back a cause, party, etc., mentally or with concrete aid.
• v. (transitive) To help, particularly financially.
• v. To verify; to make good; to substantiate; to establish; to sustain.
• v. (transitive) To serve, as in a customer-oriented mindset; to give support to.
• v. (transitive) To be designed (said of machinery, electronics, or computers, or their parts, accessories,…
• v. (transitive) To be accountable for, or involved with, but not responsible for.
• v. (archaic) To endure without being overcome; bear; undergo; to tolerate.
• v. To assume and carry successfully, as the part of an actor; to represent or act; to sustain.

supposal

• n. The act of supposing.
• n. That which is supposed; supposition; opinion.

supposition

• n. Something that is supposed; an assumption made to account for known facts, conjecture.
• n. The act or an instance of supposing.

tail

• n. (anatomy) The caudal appendage of an animal that is attached to its posterior and near the anus.
• n. The tail-end of an object, e.g. the rear of an aircraft's fuselage, containing the tailfin.
• n. An object or part of an object resembling a tail in shape, such as the thongs on a cat-o'-nine-tails.
• n. The rear structure of an aircraft, the empennage.
• n. Specifically, the visible stream of dust and gases blown from a comet by the solar wind.
• n. The latter part of a time period or event, or (collectively) persons or objects represented in this part.
• n. (statistics) The part of a distribution most distant from the mode; as, a long tail.
• n. One who surreptitiously follows another.
• n. (cricket) The last four or five batsmen in the batting order, usually specialist bowlers.
• n. (typography) The lower loop of the letters in the Roman alphabet, as in g, q or y.
• n. (chiefly in the plural) The side of a coin not bearing the head; normally the side on which the monetary…
• n. (mathematics) All the last terms of a sequence, from some term on.
• n. (now colloquial, chiefly US) The buttocks or backside.
• n. (slang) The penis of a person or animal.
• n. (slang, uncountable) Sexual intercourse.
• n. (kayaking) The stern; the back of the kayak.
• n. The back, last, lower, or inferior part of anything.
• n. A train or company of attendants; a retinue.
• n. (anatomy) The distal tendon of a muscle.
• n. A downy or feathery appendage of certain achens, formed of the permanent elongated style.
• n. (surgery) A portion of an incision, at its beginning or end, which does not go through the whole thickness…
• n. One of the strips at the end of a bandage formed by splitting the bandage one or more times.
• n. (nautical) A rope spliced to the strap of a block, by which it may be lashed to anything.
• n. (music) The part of a note which runs perpendicularly upward or downward from the head; the stem.
• n. (mining) A tailing.
• n. (architecture) The bottom or lower portion of a member or part such as a slate or tile.
• n. (colloquial, dated) A tailcoat.
• v. (transitive) To follow and observe surreptitiously.
• v. (architecture) To hold by the end; said of a timber when it rests upon a wall or other support; with in…
• v. (nautical) To swing with the stern in a certain direction; said of a vessel at anchor.
• v. To follow or hang to, like a tail; to be attached closely to, as that which can not be evaded.
• v. To pull or draw by the tail.
• adj. (law) Limited; abridged; reduced; curtailed.
• n. (law) Limitation of inheritance to certain heirs.

tush

• n. (now dialectal) A tusk.
• n. A small tusk sometimes found on the female Indian elephant.
• n. (US, colloquial) The buttocks.
• interj. An exclamation of contempt or rebuke.
• n. (Britain, colloquial) Nonsense; tosh.
• v. (transitive) To pull or drag a heavy object such as a tree or log.
• n. (Britain, obsolete slang) Alternative form of tosheroon.

understructure

• n. The supporting structure underneath something, such as a vehicle or bridge.