Past tense of foreswear; swore or renounced something beforehand.
Regular past tense of 'foreswear,' from Old English strong verb conjugation patterns. The vowel change reflects historical Germanic verb patterns.
The past tense 'foreswore' is rarer than its past participle 'foresworn' in literature—writers prefer 'he foresworn his claim' over 'he foreswore,' making the participle the more memorable form historically.
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