[in-kuh n-tes-tuh-buh l]
- incapable of being contested; not open to dispute; incontrovertible: incontestable proof.
Origin of incontestable
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- incapable of being contested or disputed
Word Origin and History for incontestability
Online Etymology Dictionary, © 2010 Douglas Harper