Synonyms: indisputable, sure
Definition: impossible to doubt or dispute
Usage: indisputable (or sure) proof
Similar words: certain
Definition: established beyond doubt or question; definitely known
Usage: what is certain is that every effect must have a cause; it is certain that they were on the bus; his fate is certain; the date for the invasion is certain
Synonyms: undisputable, incontestable, indisputable
Definition: not open to question; obviously true
Usage: undeniable guilt; indisputable evidence of a witness
Similar words: undeniable
Definition: not possible to deny