See posh in Webster's New World Roget's A-Z Thesaurus II
adjective
Being or in accordance with the current fashion:
à la mode, chic, dashing, fashionable, mod, modish, smart, stylish, swank, swanky, trig. (Informal) classy, in, sharp, snappy, swish, tony, trendy. (Slang) with-it. Idioms: all the rage, up to the minute. See style, usualCatering to, used by, or admitting only the wealthy or socially superior:
exclusive, fancy, swank, swanky. (Informal) ritzy. See plain
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