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incontestable

[in-kuh n-tes-tuh-buh l] /ˌɪn kənˈtɛs tə bəl/
adjective
1.
not contestable; not open to dispute; incontrovertible:
incontestable proof.
Origin of incontestable
1665-1675
1665-75; in-3 + contestable
Related forms
incontestability, incontestableness, noun
incontestably, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for incontestable

incontestable

/ˌɪnkənˈtɛstəbəl/
adjective
1.
incapable of being contested or disputed
Derived Forms
incontestability, incontestableness, noun
incontestably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for incontestable
adj.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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