Incontrovertible
ahd-5
adjective.
Impossible to dispute; unquestionable.
The Century Dictionary and Cyclopedia
Not controvertible; too clear or certain to admit of dispute or controversy.
the GNU version of the Collaborative International Dictionary of English
adjective.
Not controvertible; too clear or certain to admit of dispute; indisputable.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
Not capable of being
denied
,
challenged
, or
disputed
; closed to
questioning
.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
necessarily or demonstrably true
adjective.
impossible to deny or disprove