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That cannot be annulled or made void: an indefeasible claim; indefeasible rights.

in′de·fea′si·bil′i·ty n.
in′de·fea′si·bly adv.


(Law) law not liable to be annulled or forfeited
ˌindeˌfeasiˈbility, ˌindeˈfeasibleness n
ˌindeˈfeasibly adv


(ˌɪn dɪˈfi zə bəl)

not defeasible; not able to be annulled.
in`de•fea`si•bil′i•ty, n.
in`de•fea′si•bly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.indefeasible - not liable to being annulled or voided or undone; "an indefeasible right to freedom"; "an indefeasible claim to the title"
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"
References in classic literature ?
Alone in the world, cast off by it, and with this sole treasure to keep her heart alive, she felt that she possessed indefeasible rights against the world, and was ready to defend them to the death.
I was from Con- necticut, whose Constitution declares "that all political power is inherent in the people, and all free govern- ments are founded on their authority and instituted for their benefit; and that they have AT ALL TIMES an undeni- able and indefeasible right to ALTER THEIR FORM OF GOVERN- MENT in such a manner as they may think expedient.
It is the duty of the Hungarian Government to make it clear that a statement of this kind is totally indefeasible and to strike the Prime Minister of Romania from the list of civilised European politicians, Mr.
While certificates of title are indefeasible, unassailable and binding against the whole world, they merely confirm or record title already existing and vested.
We expect its indefeasible right of usage sales to be below USD25 million during the six months ended September 2017 - lagging management's expectations of USD64 million for the full year to 31 March 2018.
another Israeli telecommunications operator, regarding a potential long term cooperation agreement, for the deployment of a fiber optics infrastructure by both companies, whereby each party will be entitled to purchase from time to time, as per its needs and at its sole discretion, fiber optic infrastructure services (including Indefeasible Right of Use - IRU) from the other party's present and/or future fiber optics infrastructure in order to connect residential buildings throughout Israel, the company said.
The Vice President urged the committee to put the Indefeasible Right of Use (IRU) of the transponder as an unchangeable provision in the contract.
Some of my colleagues struggled for over two decades, and there was always this indefeasible threshold--acknowledgment that beating a child is not nurture, but plain violence.
Let us be clear at the outset: police have an indefeasible obligation to treat everyone with courtesy and respect, and to act within the confines of the law.
16) According to Antony Lentin (the translator and editor of a modern English edition of Pravda voli monarshei), the text shocked its audience, because "in Russia as in the west, succession by primogeniture, usually in the male line, was normally assumed to be the natural, God-given, legitimate and indefeasible order of things in a hereditary monarchy.
Supposing there is a normative case for indefeasible prohibitions (which the rule does not establish but needs if it is to have application), limiting them to intentional actions is warranted, since the prohibition can be complied with.
Registration is conclusive proof that a person is the owner of a property interest in a property and that the person's title to that property is indefeasible.