Past tense of 'knife'; to stab with a knife or to move through something like a knife cutting.
From Old English 'cnīf' borrowed from Old Norse 'knífr'. The verb form emerged in the 16th century, extending the noun's meaning through functional shift, a common process in English word formation.
The word 'knife' retains its silent 'k' from its Germanic origins, making it one of the most recognizable examples of historical spelling in English. Interestingly, the verb 'knifed' can describe both violent action and graceful movement, as in 'the boat knifed through the water.'
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