1. Behavior or deportment that is crude, coarse, or lacking in refinement; conduct considered socially unacceptable or in poor taste
His vulgar conduct at the dinner party offended the guests.
Sua conduta vulgar na festa de jantar ofendeu os convidados.
2. Common or base behavior; actions lacking dignity or propriety
The vulgar conduct of the crowd shocked the dignified ambassador.
A conduta vulgar da multidão chocou o embaixador dignificado.