bla ‧ sé /ˈblɑːzeɪ $ blɑːˈzeɪ/ BrE AmE adjective
[ Date: 1800-1900 ; Language: French ; Origin: past participle of blaser 'to make tired with too much of something' ]
not worried or excited about things that most people think are important, impressive etc
blasé about
He’s very blasé about money now that he’s got that job.