indisputable
1. [ adjective ] not open to question; obviously true
Synonyms: undisputable incontestable
Examples:

"undeniable guilt" "indisputable evidence of a witness"

Related terms: undeniable
2. [ adjective ] impossible to doubt or dispute
Synonyms: sure
Examples:

"indisputable (or sure) proof"

Related terms: certain
Similar spelling:   indispensable
  in_dispute
  indictable
  indisputability
  indissoluble
  indispose
  indictability
  indisposed
  indiscernible