Certain
Questioning
Questioning adjective - Inclined to doubt or question claims.
Usage example: a naturally questioning person, she demands rock-solid proof before she believes anything
Certain is an antonym for questioning.
Both words in one sentence
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Con Air was Vindicated by History to a certain extent over fascination with matters of putting bunnies back in boxes and questioning how to live without you.
Source: Watch It for the Meme -
When she propositions Roy for sex, he eagerly goes along with it, like a teenage schoolboy without questioning the ethics of sleeping with someone lacking certain brain functions.
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They just want Spider-Man to come in for questioning since he was there; they're also certain that Doctor Octopus was responsible, based on the recovered evidence.
Source: Comic Book / Marvels
Cite this Source
Questioning and Certain. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/certain/questioning
Certain & Questioning. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/certain/questioning>.
Questioning or Certain. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/certain/questioning.
Google Ngram Viewer shows how "certain" and "questioning" have occurred on timeline