Meaning

noun steadiness of mind under stress

noun an absence of strong winds or rain

noun a feeling of calm; an absence of agitation or excitement

originEtymology tree English calm Proto-Germanic *-inōną Proto-Indo-European *-dyé- Proto-Germanic *-atjaną Proto-Indo-European *-tus Proto-Germanic *-þuz Proto-Germanic *-assuz Proto-Germanic *-inassuz Proto-West Germanic *-nassī Old English -nes Middle English -nesse English -ness English calmness From calm + -ness.

Etymology from Wiktionary, CC BY-SA 3.0