Crass – Stupid and not considering of how others feel
What a crazy ass (crass), she's just really stupid.
Examples of crass in a sentence
The couple’s crass public display of affection led passersby to suggest to them that they get a room.
Compared to his usual crass manners, his behaviour tonight was rather pleasant.
It seems that you are likely to hear crass language just about everywhere you go these days.