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calm down


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WordReference Random House Learner's Dictionary of American English © 2025
calm /kɑm/USA pronunciation   adj., -er, -est, n., v. 
adj. 
  1. without rough motion;
    still: a calm sea.
  2. not windy: a calm day.
  3. free from excitement;
    tranquil: a calm manner.

n. [uncountable]
  1. stillness of weather:the calm before a storm.
  2. freedom from excitement;
    peacefulness;
    tranquillity:Calm returned once more to our little village.

v. 
  1. to (cause to) become quiet, peaceful, or free from worry: [no object; (~ + down)]The sky and sea calmed (down) and the sun came out.[~ + object]The Gospels claim that Jesus calmed the sea.[~ + down + object]Can't you calm down those children?[~ + object + down]Maybe this drink will calm you down.
calm•ly, adv. 
calm•ness, n. [uncountable]
    calm, collected, composed, cool all carry a meaning of "free from being overly excited.'' calm implies staying steady in the midst of disturbance all around: He remained calm throughout the crisis. collected implies having complete command of one's thoughts, feelings, and behavior, usually as a result of effort: The witness was remarkably collected during questioning. composed implies having inner peace with dignity and some self-confidence: He was pale but composed during the interview. cool suggests having clear judgment without strong feelings: He was cool in the face of danger.
WordReference Random House Unabridged Dictionary of American English © 2025
calm  (käm; older kam;
spelling pron. kälm),USA pronunciation adj., -er, -est, n., v. 
adj. 
  1. without rough motion;
    still or nearly still:a calm sea.
  2. not windy or stormy:a calm day.
  3. free from excitement or passion;
    tranquil:a calm face; a calm manner.

n. 
  1. freedom from motion or disturbance;
    stillness.
  2. Meteorologywind speed of less than 1 mph (0.447 m/sec).
  3. freedom from agitation, excitement, or passion;
    tranquillity;
    serenity:She faced the possibility of death with complete calm.

v.t. 
  1. to make calm:He calmed the excited dog.

v.i. 
  1. to become calm (usually fol. by down).
  • Italian calmare, derivative of the noun, nominal
  • Greek kaûma (stem kaumat-) burning heat; akin to kaíein to burn (see caustic); (verb, verbal) Middle English calmen
  • Late Latin cauma summer heat (with l perh. from Latin calēre to be hot)
  • Italian calma (noun, nominal), calmo (adjective, adjectival)
  • (noun, nominal, adjective, adjectival) Middle English calm(e) 1350–1400
calm′ing•ly, adv. 
calm′ly, adv. 
calm′ness, n. 
    • 1.See corresponding entry in Unabridged quiet, motionless.
    • 3.See corresponding entry in Unabridged placid, peaceful, serene, self-possessed.
      Calm, collected, composed, cool imply the absence of agitation.
      Calm implies an unruffled state, esp. under disturbing conditions:calm in a crisis.Collected implies complete inner command of oneself, usually as the result of an effort:He remained collected in spite of the excitement.One who is composed has or has gained dignified self-possession:pale but composed.Cool implies clarity of judgment along with apparent absence of strong feeling or excitement, esp. in circumstances of danger or strain:so cool that he seemed calm.
    • 7.See corresponding entry in Unabridged still, quiet, tranquilize; allay, assuage, mollify, soothe, soften.
    • 2.See corresponding entry in Unabridged tempestuous.
    • 3.See corresponding entry in Unabridged agitated.
Collins Concise English Dictionary © HarperCollins Publishers::
calm / kɑːm/
  1. almost without motion; still: a calm sea
  2. of force 0 on the Beaufort scale; without wind
  3. not disturbed, agitated, or excited; under control
  4. tranquil; serene: a calm voice
  1. an absence of disturbance or rough motion; stillness
  2. an absence of wind
  3. tranquillity
  1. (often followed by down) to make or become calm
Etymology: 14th Century: from Old French calme, from Old Italian calma, from Late Latin cauma heat, hence a rest during the heat of the day, from Greek kauma heat, from kaiein to burnˈcalmlyˈcalmness
'calm down' also found in these entries (note: many are not synonyms or translations):
break - chill - cool - down - hang - man - steady - wind

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