Dictionary

lackadaisical

adjective lack·a·dai·si·cal \ˌla-kə-ˈdā-zi-kəl\

: feeling or showing a lack of interest or enthusiasm

Full Definition of LACKADAISICAL

:  lacking life, spirit, or zest :  languid
lack·a·dai·si·cal·ly \-k(ə-)lē\ adverb

Examples of LACKADAISICAL

  1. His teachers did not approve of his lackadaisical approach to homework.
  2. <feeling particularly lackadaisical in the summer heat, they lazily tossed a ball back and forth>

Origin of LACKADAISICAL

irregular from lackaday + -ical
First Known Use: 1768

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