posterior
[adjective]
Synonyms: subsequent, after, ensuing, later, postliminary, subsequential, back, hind, hinder, hindmost, rear, retral
[noun]
Synonyms: back, rear, rearward, buttocks, backside, behind, rear end, rump, seat, stern, tail, tail end

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Antonyms: anterior
Contrasted words: fore, front

[TahlilGaran] English Synonym Dictionary ▲

I. pos‧te‧ri‧or¹ /pɒˈstɪəriə $ pɑːˈstɪriər/ adjective [only before noun]
[Date: 1500-1600; Language: Latin; Origin: 'further behind', from posterus 'coming after', from post; ⇒ post-]
technical near or at the back of something Antonym : anterior:
the posterior part of the brain

[TahlilGaran] Dictionary of Contemporary English ▲

II. posterior² noun [countable]
the part of the body you sit on – used humorously Synonym : buttocks, bottom

[TahlilGaran] Dictionary of Contemporary English ▲