1. A rude, rough, or vulgar manner of behavior or conduct; lack of refinement in one's bearing or social interaction
His coarse demeanor offended the guests at the formal dinner.
Seu comportamento grosseiro ofendeu os convidados do jantar formal.
2. Crude or impolite deportment that shows lack of manners or sophistication
The manager's coarse demeanor made it difficult for employees to respect him.
O comportamento grosseiro do gerente tornava difícil para os funcionários respeitá-lo.