Nonchalant vs Lackadaisical - What's the difference?

As adjectives the difference between nonchalant and lackadaisical

is that nonchalant is casually calm and relaxed while lackadaisical is showing no interest or enthusiasm.

(en adjective)

Casually calm and relaxed.

We handled the whole frenetic situation with a nonchalant attitude.

Indifferent; unconcerned; behaving as if detached.

He is far too nonchalant about such a serious matter.

* (casually calm) carefree, cool, mellow, easygoing * (indifferent) , unconcerned * See also

(en adjective)

Showing no interest or enthusiasm.

* 2010 ,

I could hear the sound of the janitor's lackadaisical scrubbing against the wooden floor.

the lackadaisical look on his face

* (showing no interest or enthusiasm) languid, listless, unenthusiastic, uninterested * See also

* lackadaisically * lackadaisicalness