BOUNTEOUS Meaning of BOUNTEOUS in English ■ adjective archaic bountiful.Derivatives~ly adverb~ness noun OriginME: from OFr. bontif , -ive 'benevolent' (from bonte 'bounty'), on the pattern of plenteous . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004