unquestionable

Từ điển American Heritage Dictionary 4th

un·ques·tion·a·ble (ŭn-kwĕsʹchə-nə-bəl)adj.
Beyond question or doubt. See Synonyms at authentic. un·ques'tion·a·bilʹi·ty or un'quesʹtion·a·ble·ness n.un·quesʹtion·a·bly adv.

• Từ đồng nghĩa / Synonyms:
  authentic, bona fide, veritable