The weakest or least strong in a group or comparison; the superlative form of feeble.
From 'feeble' plus the superlative suffix '-est,' which marks the extreme degree of an adjective and comes from Old English '-ast' or '-est.'
In Old English, superlatives like this used different endings than they do today—the '-est' suffix was once a complete word on its own, which is why it became attached to adjectives as a separate morpheme rather than blending smoothly like it does now.
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