Antonyms of adj defeasible

1 sense of defeasible

Sense 1
defeasible (vs. indefeasible) -- (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 (vs. defeasible) -- (not liable to being annulled or voided or undone; "an indefeasible right to freedom"; "an indefeasible claim to the title")
        => unforfeitable, inalienable -- (not subject to forfeiture; "an unforfeitable right")

Similarity of adj defeasible

1 sense of defeasible

Sense 1
defeasible (vs. indefeasible) -- (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")