LUKEWARM Meaning of LUKEWARM in English ■ adjective1》 only moderately warm. 2》 unenthusiastic.Derivatives~ly adverb~ness noun OriginME: from dialect luke (prob. from dialect lew '~' and related to lee ) + warm . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004