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unchallengeable
adjective
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How to pronounce unchallengeable:

Definition of unchallengeable:

unchallengeable (adjective):
blameless or faultless
adjective. not open to challenge.
not able to be disputed, questioned, or challenged not challengeable

Synonyms for unchallengeable:

above reproach
absolute
accomplished
beyond criticism
beyond question
certain
conclusive
definite
inarguable
incontestable
incontrovertible
indisputable
indubitable
irrefragable
irrefutable
irreproachable
positive
sure
unambiguous
unanswerable
unarguable
unassailable
uncontroversial
undeniable
undisputed
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Antonyms for unchallengeable:

a controversial subject
a live issue
a matter of opinion
a moot point
academic
academical
adjustable
ambiguous
answerable
arguable
assailable
borderline
chancy
changeable
changeful
contentious
contestable
contradictable
controversial
controvertible
debatable
debated
deficient
deniable
disputable
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Other 5-syllable words like unchallengeable

Here are some other common words that have 5 syllables, like unchallengeable does.

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