Desires or wants something that someone else has, often in a way that's considered unhealthy or wrong.
From Old French coveitier, from Latin cupiditas. Third-person singular present tense of covet, used since Middle English.
The word 'covet' is so negative that we rarely use it for positive desires—you 'want' a new bike but 'covet' your friend's bike in a way that implies you think it should be yours!
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