Superlative form of groovy; the most groovy or most having the quality of being cool and excellent.
From 'groovy' + the superlative suffix '-est.' This forms the strongest form of the adjective, indicating the highest degree of the quality.
The superlative 'grooviest' captures something special—it's not just the best, but the best in a *funky* way. Language lets us express that distinction, which is why slang persists: it conveys shades of meaning standard words can't.
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