Defeasible
WordNet

adjective


(1)   Capable of being annulled or voided or terminated
"A claim to an estate may be defeasible so long as the claimant is under 21 and unmarried"
WiktionaryText

Adjective



  1. Capable of being defeated, terminated, annulled, voided or invalidated.
    The accounting charge for the non-callable debt is defeasible by an escrow.
 
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