( sometimes initial capital letter ) a person who is lacking in or hostile or smugly indifferent to cultural values, intellectual pursuits, aesthetic refinement, etc., or is contentedly commonplace in ideas and tastes.

( initial capital letter ) a native or inhabitant of ancient Philistia.

( sometimes initial capital letter ) lacking in or hostile to culture.

smugly commonplace or conventional.

( initial capital letter ) of or belonging to the ancient Philistines.

noun

barbarian , chuff , churl , vulgarian , yahoo

adjective

barbarian , barbaric , boorish , churlish , crass , crude , gross , ill-bred , indelicate , rough , rude , tasteless , uncivilized , uncouth , uncultivated , uncultured , unpolished , unrefined , vulgar