Question mark
Question mark noun - A punctuation mark (?) placed at the end of a sentence to indicate a question.
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Synonyms for Question mark
Unknown and question mark are semantically related. In some cases you can use "Unknown" instead a noun phrase "Question mark".
Unknown
Unknown noun - An unknown and unexplored region.
Question mark and unknown are semantically related. Sometimes you can use "Question mark" instead a noun "Unknown".
Nearby Words: unknowable, unknowing
Mutual synonyms
Both terms in one sentence
- Heck, it even replaces wanted posters (which usually have an image of Corvo wearing his spooky mask) with a silhouette of a person with a question mark, identified as an "Unknown Assailant", as well as an achievement for completing the game without being seen a single time.
Source: Stealth Run
Cite this Source
Unknown and Question mark. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/question_mark/unknown
Question mark & Unknown. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/question_mark/unknown>.
Unknown or Question mark. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/question_mark/unknown.
Google Ngram Viewer shows how "question mark" and "unknown" have occurred on timeline