unchallengeable
Cannot be questioned
Unchallengeable describes something that cannot be disputed, questioned, or contested.
An unchallengeable lead in a race is too large to overcome.
Unchallengeable authority admits no opposition.
Her expertise in the field is unchallengeable.
The word often appears in legal and political contexts where decisions or positions are beyond appeal.
Impossible to disprove
- incontrovertibleImpossible to deny
- indisputableImpossible to contest
- undeniableImpossible to contradict
- conclusiveEnding all debate
definitive · axiomatic · self-evident · unquestionable · indubitable · unarguable · unimpeachable · watertight
Having recognized expertise
- sovereignSupreme in power
- supremeHighest in authority
- paramountOf supreme significance
- preeminentSuperior to all others
commanding · hegemony · supremacy · dominant · controlling · predominant · masterful · imperious
Impossible to overcome
- insurmountableImpossible to overcome
- impregnableImpossible to capture
- invincibleIncapable of being defeated
- unconquerableImpossible to defeat
unassailable · invulnerable · indestructible · impenetrable · ironclad · bulletproof · fortified · unyielding
irrefutable
Impossible to disprove
- incontrovertibleImpossible to deny
- indisputableImpossible to contest
- undeniableImpossible to contradict
conclusive · definitive · axiomatic · self-evident · unquestionable · indubitable · unarguable · unimpeachable · watertight · unequivocal
authoritative
Having recognized expertise
preeminent · commanding · hegemony · supremacy · dominant · controlling · predominant · masterful · imperious · dictatorial
unbeatable
Impossible to overcome
- insurmountableImpossible to overcome
- impregnableImpossible to capture
- invincibleIncapable of being defeated
unconquerable · unassailable · invulnerable · indestructible · impenetrable · ironclad · bulletproof · fortified · unyielding · adamantine
unchallengeabledebatable
Open to question
disputable · arguable · contestable · challengeable · questionable
unchallengeablevulnerable
Open to attack
assailable · beatable · defeatable · conquerable · surmountable
unchallengeableinconclusive
Not yielding a decision
uncertain · dubious · doubtful · speculative · theoretical
challenge, challenging, challenger, challenged, challenges, unchallenged, unchallenging, challengeable, counterchallenge