boorish
BOOR-ishadjMeaning rough, loud and bad-mannered
Memory hook a BOAR at the dinner table. Picture a wild boar at a dinner party: snorting, grabbing, crumbs everywhere. Rex eats just like one. He is boorish.
His boorish habit of talking with his mouth full annoyed everyone at the table.
In context The other guests were chatting quietly, so his boorish behavior stood out: he shouted across the room, put his feet on a chair and grabbed the last rolls.
Similar rude, coarse, crude, loutish
Opposite courteous, refined, gracious