| seat(noun, base, core, chief, bulk) |
| bottom(noun, core, chief, bulk, butt) |
| soul(noun, creature, person, character, being) |
| base(noun, foot, underside, nadir, basement) |
| foot(noun, base, underside, nadir, basement) |
| ground(noun, base, foot, underside, nadir) |
| rear end(noun, expression, butt, bum, buttocks) |
| tail end(noun, expression, butt, bum, buttocks) |
| underpinning(noun, base, foot, underside, nadir) |
| baby(noun, creature, person, character, being) |
| backside(noun, butt, bum, buttocks, buns) |
| beam(noun, butt, bum, buttocks, buns) |
| behind(noun, butt, bum, buttocks, buns) |
| being(noun, creature, person, character, human) |
| belly(noun, underside, underbelly, undersurface, underbody) |
| bird(noun, creature, person, character, being) |
| bod(noun, creature, person, character, being) |
| bootie(noun, butt, bum, buttocks, buns) |
| booty(noun, butt, bum, buttocks, buns) |
| breech(noun, butt, bum, buttocks, buns) |