Past tense of feed, meaning to have given food to someone or something.
From Old English fēdan, related to Proto-Germanic *fōdijan. The word evolved from the basic concept of nourishing or providing sustenance.
Interestingly, 'fed' has developed slang meanings including 'federal agent' and 'fed up' (frustrated), showing how past participles can spawn entirely new semantic territories through metaphorical extension.
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