RAMBUNCTIOUS Meaning of RAMBUNCTIOUS in English [ ram'bʌŋ(k)ʃəs ]■ adjective informal, chiefly N. Amer. uncontrollably exuberant.Derivatives~ly adverb~ness noun OriginC19: of unknown origin. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004