calmness
1. [ noun ] steadiness of mind under stress
Synonyms: calm composure equanimity
Examples:

"he accepted their problems with composure and she with equanimity"

Related terms: discomposure disposition repose aplomb calm
2. [ noun ] (meteorology) an absence of strong winds or rain
Related terms: good_weather lull stillness
3. [ noun ] a feeling of calm; an absence of agitation or excitement
Related terms: agitation feeling tranquillity coolness placidity
Similar spelling:   callowness
  Calmes
  Callens
  Callinectes
  calling
  calumnious