effusive adj. + Add to list US //ˈɛfjusɪv// UK //ɪfjˈuːsɪv// ef·fu·sive Archaic SynonymsEtymology Synonyms burblingburblygushinggushyOriginLA-MEDeffūsīvus→ENeffusive Borrowed from Medieval Latin effūsīvus, 1660s.