* Formal: The lackadaisical approach to safety protocols resulted in a series of avoidable accidents.
* Informal: He tackled his chores with a lackadaisical attitude, leaving them half-finished.
* Descriptive: The band's lackadaisical performance lacked the energy and excitement of their earlier shows.
* Humorous: My attempts at gardening are usually quite lackadaisical, resulting in more weeds than flowers.
* Figurative: Her lackadaisical pace through life often left her behind her more ambitious friends.
The word "lackadaisical" conveys a sense of laziness, indifference, and lack of enthusiasm.