American Heritage Dictionary
(1)
Century Dictionary
(1)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
How lackadaisical were the Caps over too much of this game?— The Peerless Prognosticator
At the same time, the necessary publicity of the new rules has been lackadaisical, which is typical of Indonesia ....— James Fallows
He can't hide behind a crappy team (Texas) or a lackadaisical city (Oakland).— SB Nation Featured Posts

American Heritage Dictionary (1)
Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.
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