blasé
Concise Oxford English Dictionary © 2008 Oxford University Press:
blasé /ˈblɑːzeɪ/
▶adjective unimpressed with or indifferent to something because of overfamiliarity.
– origin C19: Fr., past part. of blaser ‘cloy’, prob. ult. of Gmc origin.
'blasé' also found in these Oxford entries:

