undoubted

adj

1. Without doubt; without question; certain.

   “His undoubted skill meant that he was in much demand.”

   “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.”

   “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, […]”

   “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.”

   “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.”