say it: KAHM-nuhs
calmness is a noun meaning "steadiness of mind under stress". It carries 3 recorded senses.
steadiness of mind under stress
“he accepted their problems with composure and she with equanimity”
an absence of strong winds or rain
a feeling of calm; an absence of agitation or excitement
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for calmness come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.