bastard(разг., груб.); low-life; freak(Я актёр, а не цирковой урод – I'm an actor, not a circus freak (Michele Berdy)); jerk(someone with no moral sense • Какой-то урод шумит всю ночь. – Some depraved jerk makes noise all night. (Michele Berdy))
spaz(Some spaz is in the other room screaming about how he's been shafted – Один придурок в соседней комнате орёт, что его накололи); minger(a person who smells bad; hence, an unattractive person of either sex. From Scottish MING (to stink). Pronounced with a hard ‘g' Taras)
snot(VLZ_58); buttface(ART Vancouver); monkeyface(ART Vancouver); pukeface(ART Vancouver); trollface(ART Vancouver); dork("Mr. Big....huh...you are a dork, dude... Go crawl under your rock and disappear." (expressing disgust) • "Did you look into any of this or did you just read a BS article? All of this has been explained multiple times." "Look you dork... think before speaking..." (Twitter) -- «Слушай, ты, урод...сначала подумай, потом говори.»ART Vancouver)
klutz; odd-ball; dude; git(popular mildly offensive word for someone you don't like. Only really used for males. Franka_LV); Gomper(Обычно об очень страшных дамах, но иногда и о мужчинах . Слово новое, от названия школы для умственно отсталых Gomper school in Arizona. shergilov); jerkoff(someone whom everyone hates in a store (jerk off) Ana_net); pud(x-z); bagger(Beforeyouaccuseme); chud(Ремедиос_П); oddball; butters(BrE от butt-face, n. butters2003 – British slang (derogatory). Of a person: ugly, unattractive. In later use also of a thing: unappealing, disgusting, horrible, etc. • I look butters in that photo.oed.comPutney Heath)