Definition of

Calmness

  1. (noun, attribute) steadiness of mind under stress
  2. (noun, feeling) a feeling of calm; an absence of agitation or excitement
  3. (noun, state) an absence of strong winds or rain

via WordNet, Princeton University

Synonyms of Calmness

calm, composure, equanimity

Antonyms of Calmness

agitation

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