Added 9 October 2026 lackadaisically adverb Categories: Describing WordsObscure Words adverb ! Definition from WordNet 3.1, Princeton University. More about lackadaisically at Wordnik → Where our words come from → In an idle and lackadaisical manner. he was hanging around the house lackadaisically Related Words: perfunctorilylacklusterlyunenthusiasticallylazilyapatheticallyslacklylanguorouslydesultorilyfunlesslylethargicallylustlesslyindolently Back to today's word