buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass, body part and gluteus maximus the scientific name for the butt.

backside, behind, breech, butt, butt end, buttocks, croup, duff, fanny, haunches, hind end, hindquarters, keister, prat, rear, rear end, tail end, tail, tush

butt, bottom, backside, behind, back end, gluteus maximus, rear, rump, seat, tush, tushy, fanny, seat, posterior, buttocks, tail, tail end, caboose, badonkadonk, bum, buns, keister.

Synonyms for the word "butt" include: behind, bottom, buttocks, fanny, posterior, rear, rump, tush, bum, derriere, hindquarters, seat, gluteus maximus, backside, backend, haunches, and fundament. So, that there is seventeen different words that all can replace the word "butt".

Posterior, bottom, bum, rear, hindquarters, tail, seat, tush, buttocks...