crass
adj.adj. showing a lack of taste, sensitivity, or good manners. You use this to describe someone who is rude or makes a situation feel uncomfortable.
adj. lacking refinement, sensitivity, or good taste; showing a lack of social grace or sophistication. Often used to describe behavior that is tactless or insensitive to others.
His crass comments made everyone in the room uncomfortable.
The politician's crass remarks about his opponent's personal life were widely criticized by the media.
The film's crass attempt at humor failed to resonate with the audience, who felt the jokes were more offensive than funny.
From Middle English cras, craas, from Old French cras, from Latin crassus (“dense, thick, gross, fat, heavy”). Doublet of grease.