The superlative form of 'classy,' meaning the most elegant, stylish, or of the highest quality.
Superlative form of 'classy' (elegant or high-class), from 'class' plus '-y' plus the superlative suffix '-est.' Used informally since the mid-20th century.
The word 'classiest' is wonderfully ironic—it came from American slang to mean 'high-class' or 'elegant,' yet it's the least formal way to describe something sophisticated.
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