Questioning
Questioning adjective - Inclined to doubt or question claims.
Undercover and questioning are semantically related. In some cases you can use "Undercover" instead an adjective "Questioning".
Undercover
Undercover adjective - Undertaken or done so as to escape being observed or known by others.
Questioning and undercover are semantically related. Sometimes you can use "Questioning" instead an adjective "Undercover".
Both words in one sentence
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Episode 20: Trial of the Take, Part 3: It begins differently compared to the first team's hunt, as it turns into a murder mystery, complete with questioning of witnesses and going undercover.
Source: Web Video / Critical Role -
At the beginning of "Undercover", Ben is wary of Kevin testing the teleporter with a banana, questioning what would happen if a fly landed on the banana during the test, turning it into a "killer banana fly", a direct Shout-Out to The Fly (1958).
Cite this Source
Undercover and Questioning. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/questioning/undercover
Questioning & Undercover. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/questioning/undercover>.
Undercover or Questioning. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/questioning/undercover.
Google Ngram Viewer shows how "questioning" and "undercover" have occurred on timeline