[in-kuh n-tes-tuh-buh l]


incapable of being contested; not open to dispute; incontrovertible: incontestable proof.

Origin of incontestable

First recorded in 1665–75; in-3 + contestable
Related formsin·con·test·a·bil·i·ty, in·con·test·a·ble·ness, nounin·con·test·a·bly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for incontestable

Contemporary Examples of incontestable

  • The final and incontestable proof of his nobility is that even as he was killed, he kept the bomb from killing anybody else.

  • But, part of it also seems like ignorance of her place in history, a glib gloss on events of incontestable consequence.

    The Daily Beast logo
    The Duchess Tells All

    Chloë Schama

    November 25, 2010

Historical Examples of incontestable

  • This is quite another matter; my right of priority is incontestable.

    The Field of Ice

    Jules Verne

  • But, after all, what incontestable defect in it has any one succeeded in demonstrating?

    The Verbalist

    Thomas Embly Osmun, (AKA Alfred Ayres)

  • The highest tribute which he pays them is that their loyalty is incontestable.

  • That I take it by my own incontestable right and not of your hand, by your bounty and your charity?

    Tristram of Blent

    Anthony Hope

  • There it was, malignant and incontestable, the mark of the thing on his brow.

British Dictionary definitions for incontestable



incapable of being contested or disputed
Derived Formsincontestability or incontestableness, nounincontestably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for incontestable

1670s, from French incontestable, from in- "not" (see in- (1)) + contestable (see contest (v.)). Related: Incontestably.

Online Etymology Dictionary, © 2010 Douglas Harper