the GNU version of the Collaborative International Dictionary of English
n. the quality of being beyond question or dispute or doubt; indubitableness.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the quality of being beyond question or dispute or doubt
Word Usage
"However, even if Descartes took this view of the certainty of the cogito, he did not accept the general claim that certainty is grounded in indubitability."