crass /kræs/ BrE AmE adjective
[ Date: 1400-1500 ; Language: Latin ; Origin: crassus 'thick, fat, coarse' ]
behaving in a stupid and offensive way which shows that you do not understand or care about other people’s feelings ⇨ insensitive :
a crass remark
an act of crass stupidity
—crassly adverb