A challenge or dare (French loanword, used in English in specific contexts).
From Old French 'defi,' derived from 'defier' (to defy). It entered English from French but remains less common than its English equivalent 'defiance.'
In extreme sports circles, a 'defi' is an audacious challenge that pushes human limits—like the famous 'Defi Everest' expeditions where athletes climb the world's highest peaks.
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