idle or indolent especially in a dreamy way; "she was annoyingly lackadaisical and impractical"; "a...lackadaisical, spiritless young man-about-town"- P.G.Wodehouse
nonchalantly unconcerned; "a blase attitude about housecleaning"
uninterested because of frequent exposure or indulgence; "his blase indifference"; "a petulant blase air"; "the bored gaze of the successful film star"
very sophisticated especially because of surfeit; versed in the ways of the world; "the blase traveler refers to the ocean he has crossed as `the pond'"; "the benefits of his worldly wisdom"