fundament

UK: /fˈʌndəmənt/  

Samheiti: arse, ass, backside, base, basis, behind, bottom, bum, buns, butt, buttocks, can, cornerstone, derriere, fanny, foot, foundation, groundwork, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, substructure, tail, tail end, tooshie, tush, understructure