absonantEnglishOxford New American Dictionaryabsonant /ˈabsənənt, ˈæbsənənt / ▸ adjective archaic discordant or unreasonable. – ORIGIN mid 16th century : from Latin ab- ‘away, from’ + sonant- ‘sounding’ (from the verb sonare), on the pattern of words such as dissonant.