Superlative form of chic; the most stylish, elegant, or fashionable.
From French chic with English superlative suffix -est; follows the regular pattern for one-syllable English adjectives.
Fashion historians note that 'chic' is one of the few English words where the French pronunciation has completely won out over English ones—we say 'sheek,' never 'chick,' which shows the prestige French fashion held.
Complete word intelligence in one call. Free tier — 50 lookups/day.