The most foolish, silly, or ridiculous; superlative form of daft.
From 'daft' (foolish) + superlative suffix '-est', following standard English patterns for creating the extreme form of short adjectives.
The '-est' superlative has been English's go-to ending for short adjectives for over a thousand years—'daftest' follows the exact same pattern as 'fastest,' 'loudest,' or 'biggest,' showing how stable this grammar rule is.
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