ENTHUSIAST Meaning of ENTHUSIAST in English n. 1 (often foll. by for) a person who is full of enthusiasm. 2 a visionary; a self-deluded person. [ F enthousiaste or eccl.L enthusiastes f. Gk (as ENTHUSIASM) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012