- boorish, loutish, neanderthal, neandertal, oafish, swinish - ill-mannered and coarse and contemptible in behavior or appearance; "was boorish and insensitive"; "the loutish manners of a bully"; "her stupid oafish husband"; "aristocratic contempt for the swinish multitude"
Antonym: refined (indirect, via unrefined)