1. lacking the refinements of civilization; primitive or barbarous
2. showing bad manners; rude or impolite

Examples

• The explorers encountered what they considered uncivilized tribes in the remote jungle.
• His uncivilized behavior at the dinner party embarrassed his hosts.
• It’s uncivilized to eat with your hands at a formal restaurant.
• The ancient Romans viewed many neighboring peoples as uncivilized.
• She found his loud phone conversations in the library completely uncivilized.
• The documentary showed how early humans lived in what we might call uncivilized conditions.
• His uncivilized remarks during the meeting shocked everyone present.