"lackadaisical" in the adjective sense
1. dreamy, lackadaisical, languid, languorous
lacking spirit or liveliness
"a lackadaisical attempt"
"a languid mood"
"a languid wave of the hand"
"a hot languorous afternoon"
2. lackadaisical
idle or indolent especially in a dreamy way
"she was annoyingly lackadaisical and impractical"
"a...lackadaisical, spiritless young man-about-town"- P.G.Wodehouse
Source: WordNet® (An amazing lexical database of English)
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