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Capable of being annulled or invalidated: a defeasible claim to an estate.

de·fea′si·bil′i·ty n.


1. (Law) law (of an estate or interest in land) capable of being defeated or rendered void
2. (Philosophy) philosophy (of a judgment, opinion, etc) having a presupposition in its favour but open to revision if countervailing evidence becomes known. Compare incorrigible3
deˈfeasibleness, deˌfeasiˈbility n


(dɪˈfi zə bəl)

capable of being annulled or terminated.
[1580–90; < Anglo-French]
de•fea′si•ble•ness, de•fea`si•bil′i•ty, n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.defeasible - 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"
indefeasible - not liable to being annulled or voided or undone; "an indefeasible right to freedom"; "an indefeasible claim to the title"
References in periodicals archive ?
(11.) I used the second-order terminology instead of the higher-order one that has come to the fore in recent epistemological discussions (Christensen, 2010; Kelly, 2010), only because the evidence that is relevant for determining illocutionary force does not necessarily reveals the defeasibility of first-order evidence, but more precisely its origin or "source-route".
These strategies included shifting blame, evading responsibility (defeasibility), reducing offensiveness (bolstering and transcendence), mortification, and corrective action.
Each party should therefore acknowledge the defeasibility of her own decision.
It provides an excellent practical example of the defeasibility of legal rights, that is, even if it is possible to clearly define a legal right, there are many different ways that these rights can be effectively enjoyed, or carried out, but this is not a problem that proponents of reasoned elaboration are concerned with.
But because, as Stephen Levinson is quite correct in pointing out, "constancy under negation is not in fact a rich enough definition to pick out a coherent, homogenous set of inferences" (1983:185), the tests for presuppositional defeasibility (i.e.
evade responsibility for event (options--blame outside provocation, defeasibility in terms of information or control, unforeseen accident and emphasise good intentions), 3.
(211.) See Sachs, supra note 108, at 1838-43 (discussing the notion of "defeasibility" in integrating new law with preexisting arrangements).
Most epistemic externalists, however, allow a residual amount of internalism in terms of a defeasibility condition.
It is also an important contribution to the topic now commonly discussed under the rubric of legal defeasibility. (2) In addition, it remains a timely contribution to knotty questions about statutory interpretation.
Here is a slightly different way to approach the point: when Congress simultaneously enacts a requirement and makes it defeasible at the agency's discretion, the characteristic of defeasibility already has been built into the requirement as passed.