in·​de·​fea·​si·​ble | \ˌin-di-ˈfē-zə-bəl \

Definition of indefeasible 

: not capable of being annulled or voided or undone an indefeasible right

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Other Words from indefeasible

indefeasibility \ˌin-​di-​ˌfē-​zə-​ˈbi-​lə-​tē \ noun
indefeasibly \ˌin-​di-​ˈfē-​zə-​blē \ adverb

Did You Know?

We acquired "indefeasible" in the mid-16th century by combining the English prefix in- ("not") with "defeasible," a word borrowed a century earlier from Anglo-French. "Defeasible" itself can be traced to an Old French verb meaning "to undo" or "to destroy." It's no surprise, then, that something indefeasible is essentially "un-undoable" or "indestructible." Another member of this family of words is feasible, meaning "capable of being done or carried out." Ultimately, all three - "indefeasible," "defeasible," and "feasible" - can be traced back to the Latin verb facere, meaning "to do."

First Known Use of indefeasible

1548, in the meaning defined above

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Time Traveler for indefeasible

The first known use of indefeasible was in 1548

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in·​de·​fea·​si·​ble | \ˌin-di-ˈfē-zə-bəl \

Legal Definition of indefeasible 

: not capable of being annulled or voided an indefeasible right

Other Words from indefeasible

indefeasibly adverb

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Comments on indefeasible

What made you want to look up indefeasible? Please tell us where you read or heard it (including the quote, if possible).


to make faulty or ineffective

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