de·fea·si·ble /dɪˈfizəbəl/
(a.)可廢止的
De·fea·si·ble a. Capable of being annulled or made void; as, a defeasible title. -- De*fea*si*ble*ness, n.
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defeasible
adj : 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" [ant: indefeasible]