Synonyms and Antonyms of backside
the part of the body upon which someone sits <our backsides were sore after sitting on those hard benches for so long> Synonyms buttocks, behind, booty (also bootie) [slang], bottom, breech, bum, buns, butt, caboose, can, cheeks, derriere (or derrière), duff, fanny, fundament, hams, haunches, heinie [slang], hunkers, keister (also keester) [slang], nates, posterior, rear, rear end, rump, seat, tail, tail end, tush [slang]Related Words beam, stern; moon [slang]
Seen and Heard
What made you want to look up backside? Please tell us where you read or heard it (including the quote, if possible).