the kind of gross misconduct that could result in the defeasance of the athlete's contract to endorse their products
First Known Use of defeasance
15th century, in the meaning defined at sense 1a(1)
History and Etymology for defeasance
Middle English defesaunce, borrowed from Anglo-French defaisaunce, defesaunce "undoing, ruin, annulling of a document, condition in the document activating the annulment," from defesaunt, present participle of defaire, desfaire "to undo, put an end to, destroy, nullify" + -aunce-ance — more at defeat entry 1