This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Beyond dispute or doubt; undeniable: indisputable evidence.

adj. Not disputable; not open to question; obviously true

adj. Not disputable; incontrovertible; too evident to admit of dispute.

Not disputable; not to be disputed; undoubtedly true; incontrovertible; incontestable.

Synonyms Unquestionable, undeniable, irrefragable, indubitable, certain, positive, obvious.

adj. not open to question; obviously true

adj. impossible to doubt or dispute

"It also offers what she calls indisputable proof that her husband and flight Capt."

undeniable    certain   

undeniable    irrefutable   

infallible    irrefragable    incontrovertible    undeniable    incontestable    unquestionable    certain    positive    undoubted    sure   

disputable    immutable    inscrutable    irrefutable    mutable    suitable    unsuitable   

unquestionable    incontrovertible    incontestable    indubitable    unquestioned    undeniable    unimpeachable    self-evident    conclusive    unequivocal