Synonyms of posh

1 Syllable

in, smart, swell, grand, swish, spiff, rich, trig, chic, swank

2 Syllables

bluechip, ritzier, lavish, bandbox, sumptuous, ritzy, tonier, pricey, doggier, swanky, weeded, classier, high-end, high-class, toniest, classy, modish, trigging, swisher, select, doggy, high-brow, nobbier, sweller, swanker, trendy, dapper, swankier, swanking, plushier, nobby, pricier, classiest, firstclass, tony, splendid, plushy, bullshit

3 Syllables

upscale, overkill, opulent, esthetic, tasteful, big-ticket, luxurious, deluxe, elegant, la-di-da, refined, luxury

4 Syllables

magnifico, exclusory, exclusive, expensive, magnificent, well-endowed, unreasoned, fashionable, profusive

5 Syllables

exclusionary, many-faceted, elaborate, pleasure-loving