knucklehead Definition

bonehead, dunderhead, lunkhead, shithead, numskull, dunce, blockhead, hammerhead, loggerhead, muttonhead, moron, jackass, idiot, dumbass, butthead, schmuck, dickhead, doofus, lamebrain, douche, cretin, dork, jock, nitwit, twit, chump, nerd, jerk, putz, twerp, goon, bum, geek, fool, sucker, dope, punk, retard, lox, dummy, sap, douchebag, dumb-ass, bozo, asshat, goofball, dimwit, asshole, dolt, douche bag, buffoon, nincompoop, dufus, crybaby, wanker, scumbag, numbskull, loudmouth, meathead, motherfucker, fuckup, whiner, stupidity, bullshit, blowhard, guy, dude, kid, malcontent, dirtbag, thug, shmuck, hothead, chowderhead, crackhead, wimp, juvenile delinquent, hardass, jerks, sissy, weirdo, lout, stupidness, yapper, puker, scuzzball, dirtball, numbskulls, gym rat, lunk, expletive, pothead, lunatic, gangbanger, dweeb, coward, wuss, cussing, troublemaker, primadonna,