Word parts kind + -ness Pronunciation IPA (key): /ˈkaɪndnɪs/ or /ˈkaɪndnəs/ Audio (US)(file) Noun Singular kindness Plural kindnesses (uncountable) The quality of being kind. When you have kindness, you do many kind things. (uncountable) Kind things people do. When you help people you are showing kindness.Wikiwand - on Seamless Wikipedia browsing. On steroids.