gauche /ɡəʊʃ $ ɡoʊʃ/ BrE AmE adjective
[ Date: 1700-1800 ; Language: French ; Origin: 'left, left-handed' ]
doing or saying wrong or impolite things, especially because you do not know the right way to behave:
It would be gauche to mention the price.
—gaucheness noun [uncountable]