Synonyms in the same form
Noun plural
Fool
fools, jack-asses, idiots, donkeys, jerks, ninnies, pigs, dolts, dunces, clods, simpletons, halfwits, fucks, asswipes, schmucks
Butt
butts, bums, fannies, derrieres, tushes, rumps, posteriors, rears, buttocks, seats, back-sides, bottoms, cans, behinds, pratts, sterns, fundaments, tail-ends, keisters