Vulgarian
/vʌlˈɡeriən/
Definition 1 of 1
Pro Tip 1/3Negative Connotation
The word 'vulgarian' often implies negative judgement about someone's behavior or social grace. 
His loud laughter and rude jokes at the opera marked him as a vulgarian.
Pro Tip 2/3Cultural Refinement
'Vulgarian' indicates a lack of cultural knowledge that is expected in certain social situations. 
He was branded a vulgarian for mistaking the salad fork for the dinner fork.
Pro Tip 3/3Socio-Economic Implications
Being a vulgarian is not related to wealth; even wealthy people can be considered vulgar. 
Despite her designer clothes, many considered her a vulgarian because of her coarse language.