← BackshareGuesslackadaisical/ˌlækəˈdeɪzɪkəl/adjectiveShowing little interest or effort; lazy or carelessly relaxed.She gave a lackadaisical wave as she walked away.The waiter was lackadaisical and forgot our order twice.His lackadaisical attitude toward homework led to poor grades.SynonymscarelesslistlesslazyAntonymsdiligentenergetic