150 entries under noun topic. ×

1
trouble(concern, anxiety, confusion, doubt)
1
uneasiness(trouble, concern, anxiety, confusion)
1
unpredictability(trouble, concern, anxiety, confusion)
1
vagueness(trouble, concern, anxiety, confusion)
1
worry(trouble, concern, anxiety, confusion)
0
blue book(expression, test, puzzle, questioning)
0
brainteaser(challenge, question, puzzle, example)
0
bugaboo(challenge, question, puzzle, example)
0
captain
0
cliff-hanger(challenge, question, puzzle, example)
0
conversation
0
converse
0
discussion
0
exam(test, puzzle, questioning)
0
grabber(challenge, doubt, question, uncertainty)
0
hesitation(trouble, concern, anxiety, confusion)
0
illustration(challenge, question, puzzle, example)
0
insecurity(anxiety, doubt, uncertainty, vagueness)
0
intricacy(challenge, question, puzzle, example)
0
mind-boggler(challenge, doubt, question, uncertainty)
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APASmart Define. (2016). query thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/query/thesaurus/synonyms
ChicagoSmart Define. 2016. "query thesaurus" https://smartdefine.org/query/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, query thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/query/thesaurus/synonyms>.
MLASmart Define. "query thesaurus" 17 February 2016. Web. 25 September 2026. <https://smartdefine.org/query/thesaurus/synonyms>