QUESTIONLESS
Etymology
Adjective
questionless (comparative more questionless, superlative most questionless)
(rare) Certain; indubitable; unquestionable; not admitting of question or doubt.
Asking no questions; unquestioning.
Adverb
questionless
(archaic) Certainly; undoubtedly; without question.
Source: Wiktionary
Ques"tion*less, a.
Definition: Unquestioning; incurious. [R.]
Ques"tion*less, adv.
Definition: Beyond a question or doubt; doubtless; certainly.[R.] South.
What it was in the apostles' time, that, questionless, it must be
still. Milton.
Source: Webster’s Unabridged Dictionary 1913 Edition