LACKADAISICAL Meaning of LACKADAISICAL in English lackadaisical BrE AmE ˌlæk ə ˈdeɪz ɪk ə l ◂▷ lackadaisical|ly ‿i▷ lackadaisical|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012