rude or insensitive
boorish - rude
Somebody who looks and/or behaves in an ill-mannered, rough, or contemptible way can be described as ‘boorish’. It does not necessarily apply to a person’s education, it’s more to do with how they conduct or present themselves. For example, even if they have a degree from a prestigious university; if they say loud and ignorant things they are still boorish. Tends to be directed at men.
Our manager’s boorish behaviour alienates a lot of people in the office. He can be horribly obtuse and overbearing at times, particularly towards women.
There was a lot of heavy drinking and crass banter going on at the party. I felt uncomfortable around such boorishness.
The politician’s boorishly ignorant remarks were roundly condemned, and he later issued a full apology.