To kick back or resist obstinately; to show resistance or opposition through stubborn refusal.
From Latin 'calcitrare' (to kick back), from 'calx' (heel). The term originally meant to physically kick back like an animal, then became metaphorical for any stubborn resistance.
When you 'calcitrate,' you're basically acting like a mule refusing to move—and the word literally comes from animals kicking backward with their heels to resist control!
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