The most silly, eccentric, or scatterbrained; superlative form of daffy.
From 'daffy' + superlative suffix '-est'. This follows standard English patterns for creating the extreme form of an adjective describing foolishness.
English speakers instinctively use '-est' for short adjectives like daffy, but we say 'most silly' for longer ones—this pattern helps us speak smoothly without tongue-twisting clusters of sounds.
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