• IPA: /ʌnˈdaʊtɪd/

undoubted

1. Without doubt; without question; certain.

   His undoubted skill meant that he was in much demand.

   • c. 1602, William Shakespeare, All’s Well That Ends Well, Act II, Scene 1,

     More should I question thee, and more I must,

     Though more to know could not be more to trust,

     From whence thou camest, how tended on: but rest

     Unquestion’d welcome and undoubted blest.

   • 1671, John Milton, “Book the First”, in Paradise Regain’d. A Poem. In IV Books. To which is Added, Samson Agonistes, London: Printed by J. M[acock] for John Starkey […], OCLC 228732398 ↗, lines 8–11, pages 1–2 ↗:

     Thou Spirit who ledſt this glorious Eremite / Into the Deſert, his Victorious Field / Againſt the Spiritual Foe, and broughtſt him thence / By proof the undoubted Son of God, {{...}

   • 1813, Jane Austen, Pride and Prejudice, Volume II, Chapter 12,

     Of what he has particularly accused me I am ignorant; but of the truth of what I shall relate, I can summon more than one witness of undoubted veracity.

   • 1923, “Current Situation,” Time, 3 December, 1923,^{[http://www.time.com/time/magazine/article/0,9171,717107,00.html]}

     The place of psychology in business is undoubted; whether it can prevail against more concrete and material facts, and if so, how long, remain debatable propositions.

• uncontested
• unquestioned
• undisputed
• doubtless