Synonyms of the word

intelligent

• adj. Of high or especially quick cognitive capacity, bright.
• adj. Well thought-out, well considered.
• adj. Characterized by thoughtful interaction.
• adj. Having the same level of brain power as mankind.
• adj. Having an environment-sensing automatically-invoked built-in computer capability.

agile

• adj. Having the faculty of quick motion in the limbs; apt or ready to move; nimble;.
• adj. Characterised by quick motion.
• adj. (computing) Of or relating to Agile software development, a technique for iterative and incremental development…

alert

• adj. Attentive; awake; on guard.
• adj. (obsolete) Brisk; nimble; moving with celerity.
• n. An alarm.
• n. A notification of higher importance than an advisory.
• v. To give warning to.

apt

• adj. Suitable; appropriate; fit or fitted; suited.
• adj. (of persons or things) Having a habitual tendency; habitually liable or likely; disposed towards.
• adj. Ready; especially fitted or qualified (to do something); quick to learn; prompt; expert.

born

• v. past participle of bear; given birth to.
• v. (obsolete) past participle of bear in other senses.
• adj. Well suited to (some behaviour or occupation), as though from birth.
• n. (Geordie) Alternative spelling of burn A stream.
• v. (Geordie) Alternative spelling of burn With fire.

brainy

• adj. (informal) Very intellectually capable.

bright

• adj. Visually dazzling; luminous, lucent, clear, radiant; not dark.
• adj. Having a clear, quick intellect; intelligent.
• adj. Vivid, colourful, brilliant.
• adj. Happy, in good.
• adj. Sparkling with wit; lively; vivacious; cheerful.
• adj. Illustrious; glorious.
• adj. Clear; transparent.
• adj. (archaic) Manifest to the mind, as light is to the eyes; clear; evident; plain.
• n. An artist's brush used in oil and acrylic painting with a long ferrule and a flat, somewhat tapering bristle…
• n. (obsolete) splendour; brightness.
• n. (neologism) A person with a naturalistic worldview with no supernatural or mystical elements.
• n. (US, in the plural) The high-beam intensity of motor vehicle headlamps.

brilliant

• adj. Shining brightly.
• adj. (of a colour) Both bright and saturated.
• adj. (of a voice or sound) having a sharp, clear tone.
• adj. Of surpassing excellence.
• adj. Magnificent or wonderful.
• adj. Highly intelligent.
• n. A finely cut gemstone, especially a diamond, cut in a particular form with numerous facets so as to maximize…
• n. (uncountable, printing, dated) The size of type between excelsior and diamond, standardized as 4-point.
• n. Most hummingbird species of the genus Heliodoxa.
• n. A kind of cotton goods, figured on the weaving.

clever

• adj. Nimble with hands or body; skillful; adept.
• adj. Resourceful, sometimes to the point of cunning.
• adj. Smart, intelligent, or witty; mentally quick or sharp.
• adj. Showing inventiveness or originality; witty.
• adj. (anthropology, of an Aboriginal Australian) Possessing magical abilities.
• adj. (obsolete) Fit; suitable; having propriety.
• adj. (obsolete) Well-shaped; handsome.
• adj. (US, dated) Good-natured; obliging.
• adj. (Britain, colloquial) Fit and healthy; free from fatigue or illness.

healthy

• adj. Enjoying health and vigor of body, mind, or spirit: well.
• adj. Conducive to health.
• adj. Evincing health.
• adj. (figuratively) Significant, hefty; beneficial.

innate

• adj. inborn; existing or having existed since birth.
• adj. (philosophy) Originating in, or derived from, the constitution of the intellect, as opposed to acquired…
• adj. instinctive; coming from instinct.
• adj. (botany) Joined by the base to the very tip of a filament.
• v. To cause to exist; to call into being.

level-headed

• adj. (idiomatic) Sensible; rational; possessing sound judgment.

levelheaded

• adj. Alternative spelling of level-headed.

natural

• adj. That exists and evolved within the confines of an ecosystem.
• adj. Of or relating to nature.
• adj. Without artificial additives.
• adj. As expected; reasonable.
• adj. (music) Neither sharp nor flat. Denoted ♮.
• adj. (music) Produced by natural organs, such as those of the human throat, in distinction from instrumental…
• adj. (music) Applied to an air or modulation of harmony which moves by easy and smooth transitions, digressing…
• adj. Without, or prior to, modification or adjustment.
• adj. Having the character or sentiments properly belonging to one's position; not unnatural in feelings.
• adj. (obsolete) Connected by the ties of consanguinity.
• adj. (obsolete) Born out of wedlock; illegitimate; bastard.
• adj. (of sexual intercourse) Without a condom.
• n. (now rare) A native inhabitant of a place, country etc.
• n. (music) A note that is not or is no longer to be modified by an accidental, or the symbol ♮ used to indicate…
• n. One with an innate talent at or for something.
• n. An almost white colour, with tints of grey, yellow or brown; originally that of natural fabric.
• n. (archaic) One with a simple mind; a fool or idiot.
• n. (colloquial, chiefly Britain) One's natural life.
• n. (African American Vernacular) A hairstyle for people with afro-textured hair in which the hair is not…
• n. (algebra) Closed under submodules, direct sums, and injective hulls.

nimble

• adj. Quick and light in movement or action.
• adj. Quick-witted and alert.

precocious

• adj. Characterized by exceptionally early development or maturity.
• adj. Exhibiting advanced skills and aptitudes at an abnormally early age.

prehensile

• adj. (zoology) Able to take hold of and clasp objects; adapted for grasping especially by wrapping around an…

quick

• adj. Moving with speed, rapidity or swiftness, or capable of doing so; rapid; fast.
• adj. Occurring in a short time; happening or done rapidly.
• adj. Lively, fast-thinking, witty, intelligent.
• adj. Mentally agile, alert, perceptive.
• adj. Of temper: easily aroused to anger; quick-tempered.
• adj. (archaic) Alive, living.
• adj. (archaic) Pregnant, especially at the stage where the foetus's movements can be felt; figuratively, alive…
• adj. Of water: flowing.
• adj. Burning, flammable, fiery.
• adj. Fresh; bracing; sharp; keen.
• adj. (mining, of a vein of ore) productive; not "dead" or barren.
• adv. quickly.
• adv. (colloquial) with speed.
• n. raw or sensitive flesh, especially that underneath finger and toe nails.
• n. plants used in making a quickset hedge.
• n. The life; the mortal point; a vital part; a part susceptible to serious injury or keen feeling.
• n. quitchgrass.
• n. (cricket) A fast bowler.
• v. (transitive) To amalgamate surfaces prior to gilding or silvering by dipping them into a solution of mercury…
• v. (transitive, archaic, poetic) To quicken.

rational

• adj. Capable of reasoning.
• adj. Logically sound; not contradictory or otherwise absurd.
• adj. (of a person or personal characteristics) Healthy or balanced intellectually; exhibiting reasonableness.
• adj. (mathematics, arithmetic, number theory, not comparable) Of a number, capable of being expressed as the…
• adj. (mathematics, arithmetic, not comparable) Of an algebraic expression, capable of being expressed as the…
• adj. (chemistry) Expressing the type, structure, relations, and reactions of a compound; graphic; said of formulae.
• adj. (physics) Expressing a physical object.
• n. (mathematics) A rational number: a number that can be expressed as the quotient of two integers.
• n. the breastplate worn by Israelite high priests.

ready

• adj. Prepared for immediate action or use.
• adj. Inclined; apt to happen.
• adj. Liable at any moment.
• adj. Not slow or hesitating; quick in action or perception of any kind; dexterous; prompt; easy; expert.
• adj. Offering itself at once; at hand; opportune; convenient.
• v. To make prepared for action.
• n. (slang) ready money; cash.

reasonable

• adj. Having the faculty of reason; imbued with reason; rational.
• adj. Just; fair; agreeable to reason.
• adj. Not excessive or immoderate; within due limits; proper.
• adj. Not expensive; fairly priced.
• adj. Satisfactory.

reasoning

• n. Action of the verb to reason.
• n. The deduction of inferences or interpretations from premises; abstract thought; ratiocination.
• n. A Rastafari meeting held for the purposes of chanting, prayer and discussion.
• v. present participle of reason.

scintillating

• v. present participle of scintillate.
• adj. That scintillates with brief flashes of light; sparkling.
• adj. Brilliantly or impressively clever, exciting, amusing or witty.

searching

• v. present participle of search.
• adj. (of an investigation, etc.) Thorough.
• n. search; hunt.

sensible

• adj. (now dated or formal) Perceptible by the senses.
• adj. Easily perceived; appreciable.
• adj. (archaic) Able to feel or perceive.
• adj. (archaic) Liable to external impression; easily affected; sensitive.
• adj. Of or pertaining to the senses; sensory.
• adj. (archaic) Cognizant; having the perception of something; aware of something.
• adj. Acting with or showing good sense; able to make good judgements based on reason.
• adj. Characterized more by usefulness or practicality than by fashionableness, especially of clothing.
• n. (obsolete) Sensation; sensibility.
• n. (obsolete) That which impresses itself on the senses; anything perceptible.
• n. (obsolete) That which has sensibility; a sensitive being.

smart

• v. (intransitive) To hurt or sting.
• v. (transitive) To cause a smart or sting in.
• v. To feel a pungent pain of mind; to feel sharp pain or grief; to suffer; to feel the sting of evil.
• adj. Causing sharp pain; stinging.
• adj. Sharp; keen; poignant.
• adj. Exhibiting social ability or cleverness.
• adj. Exhibiting intellectual knowledge, such as that found in books.
• adj. (often in combination) Equipped with digital/computer technology.
• adj. Good-looking.
• adj. Cleverly shrewd and humorous in a way that may be rude and disrespectful.
• adj. Sudden and intense.
• adj. (US, Southern, dated) Intense in feeling; painful. Used usually with the adverb intensifier right.
• adj. (archaic) Efficient; vigorous; brilliant.
• adj. (archaic) Pretentious; showy; spruce.
• adj. (archaic) Brisk; fresh.
• n. A sharp, quick, lively pain; a sting.
• n. Mental pain or suffering; grief; affliction.
• n. Smart-money.
• n. (slang, dated) A dandy; one who is smart in dress; one who is brisk, vivacious, or clever.

sophisticated

• adj. Having obtained worldly experience, and lacking naiveté; cosmopolitan.
• adj. Elegant, refined.
• adj. Complicated, especially of complex technology.
• adj. Appealing to the tastes of an intellectual; cerebral.
• adj. (obsolete, Britain) Dishonest or misleading.
• v. simple past tense and past participle of sophisticate.

sound

• adj. Healthy.
• adj. Complete, solid, or secure.
• adj. (mathematics, logic) Having the property of soundness.
• adj. (Britain, slang) Good; acceptable; decent.
• adj. (of sleep) Quiet and deep. Sound asleep means sleeping peacefully, often deeply.
• adj. Heavy; laid on with force.
• adj. Founded in law; legal; valid; not defective.
• adv. Soundly.
• interj. (Britain, slang) Yes; used to show agreement or understanding, generally without much enthusiasm.
• n. A sensation perceived by the ear caused by the vibration of air or some other medium.
• n. A vibration capable of causing such sensations.
• n. (music) A distinctive style and sonority of a particular musician, orchestra etc.
• n. Noise without meaning; empty noise.
• v. (intransitive) To produce a sound.
• v. (copulative) To convey an impression by one's sound.
• v. (intransitive) To be conveyed in sound; to be spread or published; to convey intelligence by sound.
• v. (intransitive, obsolete) To resound.
• v. (intransitive, law, often with in) To arise or to be recognizable as arising in or from a particular area…
• v. (transitive) To cause to produce a sound.
• v. (transitive, phonetics, of a vowel or consonant) To pronounce.
• n. (geography) A long narrow inlet, or a strait between the mainland and an island; also, a strait connecting…
• n. The air bladder of a fish.
• n. A cuttlefish.
• v. (intransitive) Dive downwards, used of a whale.
• v. To ascertain, or try to ascertain, the thoughts, motives, and purposes of (a person); to examine; to try;…
• v. Test; ascertain the depth of water with a sounding line or other device.
• v. (medicine) To examine with the instrument called a sound or sonde, or by auscultation or percussion.
• n. (medicine) An instrument for probing or dilating; a sonde.
• n. A long, thin probe for sounding body cavities or canals such as the urethra.

thinking

• n. Gerund of think.
• v. present participle of think.

trenchant

• adj. (obsolete) Fitted to trench or cut; gutting; sharp.
• adj. (figuratively) Keen; biting; vigorously effective and articulate; severe.

well-informed

• adj. Furnished with sufficient, correct knowledge.