adjective, calm·er, calm·est.

  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.


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

verb (used with object)

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

verb (used without object)

  1. to become calm (usually followed by down).


  1. almost without motion; stilla calm sea
  2. meteorol of force 0 on the Beaufort scale; without wind
  3. not disturbed, agitated, or excited; under controlhe stayed calm throughout the confusion
  4. tranquil; serenea calm voice


  1. an absence of disturbance or rough motion; stillness
  2. absence of wind
  3. tranquillity


  1. (often foll by down) to make or become calm

1510s, from calm (adj.) + -ness.


late 14c., from Old French calme, carme “stillness, quiet, tranquility,” from the adjective (see calm (adj.)).


late 14c., from Old French calmer or from calm (adj.). Related: Calmed; calming.


late 14c., from Old French calme “tranquility, quiet,” traditionally from Old Italian calma, from Late Latin cauma “heat of the mid-day sun” (in Italy, a time when everything rests and is still), from Greek kauma “heat” (especially of the sun), from kaiein “to burn” (see caustic). Spelling influenced by Latin calere “to be hot.” Figurative application to social or mental conditions is 16c.

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