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

"undeniable guilt" "indisputable evidence of a witness"

Related terms: undeniable
2. [ adjective ] incapable of being contested or disputed
Synonyms: incontestible
Related terms: contestable demonstrated demonstrable unanswerable ironclad inarguable unquestionable
Similar spelling:   incontestible
  inconsolable
  incontrovertible
  inconceivable
  incomputable
  incommutable
  inconvenient
  incontrovertibly
  insentient
  inconstant
  in_concert
  inconveniently
  inconceivably
  incontinent
  inconstancy