blase
adjective()
very sophisticated especially because of surfeit; versed in the ways of the world
Examples:
The blase traveler refers to the ocean he has crossed as `the pond'. 
blase
adjective()
uninterested because of frequent exposure or indulgence
Examples:
His blase indifference. 
A petulant blase air. 
blase
adjective()
nonchalantly unconcerned
Examples:
A blase attitude about housecleaning.