noun

a rough and bad-mannered person.

at last the big obnoxious boor had been dealt a stunning blow for his uncouth and belligerent manner

lout,oaf,ruffian,hooligan,thug,rowdy,bully boy,brawler,rough,churl,lubber,philistine,vulgarian,yahoo,barbarian,Neanderthal,primitive,savage,brute,beast,monster,bosthoon,clodhopper,clod,tough,toughie,roughneck,peasant,pig,bruiser,hard man,yobbo,yob,chav,lager lout,oik,lump,ape,gorilla,lummox,hoon