Synonyms of the word

placid

• adj. calm and quiet; peaceful; tranquil.

calm

• adj. (of a person) Peaceful, quiet, especially free from anger and anxiety.
• adj. (of a place or situation) Free of noise and disturbance.
• adj. (of water) with little waves on the surface.
• adj. Without wind or storm.
• n. (in a person) The state of being calm; peacefulness; absence of worry, anger, fear or other strong negative…
• n. (in a place or situation) The state of being calm; absence of noise and disturbance.
• n. A period of time without wind.
• v. (transitive) To make calm.
• v. (intransitive) To become calm.

content

• n. (uncountable) That which is contained.
• n. Subject matter; that which is contained in writing or speech.
• n. The amount of material contained; contents.
• n. Capacity for holding.
• n. (mathematics) The n-dimensional space contained by an n-dimensional polytope (called volume in the case…
• adj. Satisfied about a particular circumstance; thus, in a state of satisfaction.
• interj. (archaic) Alright, agreed.
• n. Satisfaction; contentment.
• n. (obsolete) acquiescence without examination.
• n. That which contents or satisfies; that which if attained would make one happy.
• n. (Britain, House of Lords) An expression of assent to a bill or motion; an affirmate vote.
• n. (Britain, House of Lords) A member who votes in assent.
• v. (transitive) To give contentment or satisfaction; to satisfy; to make happy.
• v. (transitive, obsolete) To satisfy the expectations of; to pay; to requite.

contented

• v. simple past tense and past participle of content.
• adj. Satisfied.

easygoing

• adj. (of a person) calm, relaxed, casual and informal.
• adj. (of a journey or pace) unhurried.

equable

• adj. Unvarying, calm and steady; constant and uniform.
• adj. (of temperature) Free from extremes of heat or cold.
• adj. (of emotions etc) Not easily disturbed; tranquil.

even-tempered

• adj. Remaining calm even in situations that would cause many others to become angry, frustrated, panicky, etc.

good-natured

• adj. Of or pertaining to an amicable, kindly disposition.

good-tempered

• adj. Not easily irritated; affable.

quiet

• adj. With little or no sound; free of disturbing noise.
• adj. Having little motion or activity; calm.
• adj. Not busy, of low quantity.
• adj. Not talking much or not talking loudly; reserved.
• adj. Not showy; undemonstrative.
• adj. (software) Requiring little or no interaction.
• v. To become quiet, silent, still, tranquil, calm.
• v. To cause someone to become quiet.
• n. The absence of sound; quietness.
• n. the absence of movement; stillness, tranquility.
• interj. Be quiet.

smooth

• adj. Having a texture that lacks friction. Not rough.
• adj. Without difficulty, problems, or unexpected consequences or incidents.
• adj. Bland; glib.
• adj. Flowing or uttered without check, obstruction, or hesitation; not harsh; fluent.
• adj. (of a person) Suave; sophisticated.
• adj. (of an action) Natural; unconstrained.
• adj. (of a motion) Unbroken.
• adj. (chiefly of water) Placid, calm.
• adj. (of an edge) Lacking projections or indentations; not serrated.
• adj. (of food or drink) Not grainy; having an even texture.
• adj. (of a beverage) Having a pleasantly rounded flavor; neither rough nor astringent.
• adj. (mathematics, of a function) Having derivatives of all finite orders at all points within the function’s…
• adj. (mathematics, of a number) That factors completely into small prime numbers.
• adj. (linguistics, classical studies, of a vowel) Lacking marked aspiration.
• adj. (of muscles, medicine) Involuntary and non-striated.
• adv. Smoothly.
• n. Something that is smooth, or that goes smoothly and easily.
• n. A smoothing action.
• n. A domestic animal having a smooth coat.
• n. A member of an anti-hippie fashion movement in 1970s Britain.
• n. (statistics) The analysis obtained through a smoothing procedure.
• v. To make smooth or even.
• v. To make straightforward.
• v. (statistics, image processing, digital audio) To capture important patterns in the data, while leaving…

still

• adj. Not moving; calm.
• adj. Not effervescing; not sparkling.
• adj. Uttering no sound; silent.
• adj. (not comparable) Having the same stated quality continuously from a past time.
• adj. Comparatively quiet or silent; soft; gentle; low.
• adj. (obsolete) Constant; continual.
• adv. Without motion.
• adv. (aspect) Up to a time, as in the preceding time.
• adv. (degree) To an even greater degree. Used to modify comparative adjectives or adverbs.
• adv. (conjunctive) Nevertheless.
• adv. (archaic, poetic) Always; invariably; constantly; continuously.
• adv. (extensive) Even, yet.
• n. A period of calm or silence.
• n. (photography) A photograph, as opposed to movie footage.
• n. (slang) A resident of the Falkland Islands.
• n. A steep hill or ascent.
• n. a device for distilling liquids.
• n. (catering) a large water boiler used to make tea and coffee.
• n. (catering) the area in a restaurant used to make tea and coffee, separate from the main kitchen.
• n. A building where liquors are distilled; a distillery.
• v. to calm down, to quiet.
• v. (obsolete) To trickle, drip.
• v. To cause to fall by drops.
• v. To expel spirit from by heat, or to evaporate and condense in a refrigeratory; to distill.

tranquil

• adj. Free from emotional or mental disturbance.
• adj. Calm; without motion or sound.

unruffled

• adj. Calm, not ruffled, serene, at peace, unbothered.