LACKADAISICAL Meaning of LACKADAISICAL in English adj. 1 unenthusiastic; listless; idle. 2 feebly sentimental and affected. lackadaisically adv. lackadaisicalness n.[ archaic lackaday, -daisy (int.): see ALACK ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012