posterior

(noun) the fleshy part of the human body that you sit on. Synonyms: buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass. Examples: "He deserves a good kick in the butt." "Are you going to sit on your fanny and do nothing?."

(noun) a tooth situated at the back of the mouth. Synonyms: back tooth.

(adj) located at or near or behind a part or near the end of a structure. Synonyms: posterior (vs. anterior).

(adj) coming at a subsequent time or stage. Synonyms: later(prenominal), ulterior. Examples: "Without ulterior argument." "The mood posterior to."