Synonyms For "Posterior" :
1 syllable:
arse, ass, back, bum, buns, butt, can, hind, prat, rear, rump, seat, stern, tail, tooshie, tush
2 syllables:
back tooth, backside, behind, bottom, buttocks, caudal, fanny, hind end, hinder, later, nates, rear end, retral, tail end