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1. Steadiness of mind under stress
   "he accepted their problems with calmness and she with equanimity"
   - composure, calm, equanimity, collectedness, unflappability
    
2. An absence of strong winds or rain
    
3. A feeling of calm; an absence of agitation or excitement

Derived forms: calmnesses

See also: calm

Type of: disposition, feeling, good weather, temperament

Antonym: agitation

Encyclopedia: Calmness