Added 9 October 2026 calmness /ˈkɑ(l)mnəs/ noun Categories: Describing WordsFeelingsRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about calmness at Wordnik → Where our words come from → 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. Related Words: equanimitycomposureserenitytranquillitytranquilitypeacequietnessquietsilencepacificationlullease Back to today's word