Synonyms of the word

composed

• adj. showing composure.
• v. simple past tense and past participle of compose.

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.

collected

• adj. Cool‐headed, emotionally stable, in focus.
• v. simple past tense and past participle of collect.

combined

• adj. Resulting from the addition of several sources, parts, elements, aspects, etc. able to be united together,…
• v. simple past tense and past participle of combine.
• n. (skiing) An event in alpine skiing consisting of one run of downhill and two runs of slalom.

cool

• adj. Having a slightly low temperature; mildly or pleasantly cold.
• adj. Allowing or suggesting heat relief.
• adj. Of a person, not showing emotion, calm and in self-control.
• adj. Unenthusiastic, lukewarm, skeptical.
• adj. Calmly audacious.
• adj. (informal) Of a person, knowing what to do and how to behave; considered popular by others.
• adj. (informal) In fashion, part of or fitting the in crowd; originally hipster slang.
• adj. (informal) Of an action, all right; acceptable; that does not present a problem.
• adj. (informal) Of a person, not upset by circumstances that might ordinarily be upsetting.
• adj. Applied facetiously to a sum of money, commonly as if to give emphasis to the largeness of the amount.
• n. A moderate or refreshing state of cold; moderate temperature of the air between hot and cold; coolness.
• n. A calm temperament.
• v. (literally intransitive) To lose heat, to get colder.
• v. (transitive) To make cooler, less warm.
• v. (figuratively, intransitive) To become less intense, e.g. less amicable or passionate.
• v. (transitive) To make less intense, e.g. less amicable or passionate.
• v. (transitive) To kill.

coolheaded

• adj. Having an even temper; calm and collected.

dignified

• adj. respectable.
• v. simple past tense and past participle of dignify.

equanimous

• adj. Calm and composed; of stable disposition.

imperturbable

• adj. Not easily perturbed, upset or excited.
• adj. Calm and collected, even under pressure.

nerveless

• adj. Lacking nerve: fearful; cowardly.
• adj. (biology) Lacking a nervous system.
• adj. Devoid of nerves: calm, controlled, cool under pressure.

poised

• adj. Possessing poise, having self-confidence.
• adj. Ready, prepared.
• v. simple past tense and past participle of poise.

self-contained

• adj. Not requiring external or additional support; complete in itself.

self-possessed

• adj. in full control of one's faculties, and having a firm belief in one's abilities; confident, assured and…

serene

• adj. Peaceful, calm, unruffled.
• adj. Without worry or anxiety; unaffected by disturbance.
• adj. (archaic) fair and unclouded (as of the sky); clear; unobscured.
• adj. Used as part of certain titles.
• v. (transitive) To make serene.
• n. (poetic) Serenity; clearness; calmness.
• n. Evening air; night chill.
• n. A fine rain from a cloudless sky after sunset.

tranquil

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

unagitated

• adj. Not agitated (physically or emotionally).

unflappable

• adj. Remaining composed and level-headed at all times; unswayed by adversity or excitement; impossible to fluster;…

unflustered

• adj. Not flustered; calm.

unperturbed

• adj. Not perturbed.

unruffled

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