Webster's Revised Unabridged Dictionary · 1913

Blasé

Blasé (blȧ*za") , adjective

[French, past participle of blaser.]

1.
Having the sensibilities deadened by excess or frequency of enjoyment; sated or surfeited with pleasure; uninterested because of frequent exposure or indulgence; used up.
2.
very sophisticated; versed in the ways of the world.
3.
uninterested and attaching little importance; -- of attitudes toward duties.

Also: Blase