2
enigma(noun, mystery)
2
interrogation point
2
question(problem, secret, puzzle, reservation, knot)
1
baffling problem
1
bone of contention(expression, idiom)
1
bracket
1
brain twister
1
catechism
1
comma
1
cross-interrogatory
1
cross-question
1
crossword puzzle
1
crux
1
debating point
1
demand
1
enigmatic question
1
feeler
1
floorer
1
inquiry
1
interrogation
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APASmart Define. (2015). question mark thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/question_mark/thesaurus/synonyms
ChicagoSmart Define. 2015. "question mark thesaurus" https://smartdefine.org/question_mark/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, question mark thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/question_mark/thesaurus/synonyms>.
MLASmart Define. "question mark thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/question_mark/thesaurus/synonyms>