indefeasible

adjective

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."

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The first known use of indefeasible was in 1548

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indefeasible

adjective

in·de·fea·si·ble | \ˌin-di-ˈfē-zə-bəl

\

Legal Definition of indefeasible

: not capable of being annulled or voided an indefeasible right

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