Unquestioned (adjective)

1. Not doubted or challenged; accepted without question.
2. Not subject to examination or investigation.

Origin:

Late middle english: from un- (expressing negation) + questioned, past participle of question.

Examples:

1. The unquestioned authority of the leader.
2. The unquestioned integrity of the witness.
3. The unquestioned accuracy of the data.
4. An unquestioned assumption.
5. Unquestioned loyalty.