5
conundrum(noun, trouble, challenge, question, secret)
4
boring
2
deal breaker(noun, challenge, case, matter, knot)
2
enigma
1
examine methodically
1
physics(noun, issue, challenge, case, matter)
1
quantum physics
1
under the radar
0
abrupt
0
absolute
0
acrimonious
0
acrostic
0
adumbrate
0
agree with
0
alive with
0
ambiguity
0
amphibology
0
amphiboly
0
arduous
0
assign
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APASmart Define. (2016). riddle thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/riddle/thesaurus/related
ChicagoSmart Define. 2016. "riddle thesaurus" https://smartdefine.org/riddle/thesaurus/related (accessed September 20, 2026).
HarvardSmart Define 2016, riddle thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/riddle/thesaurus/related>.
MLASmart Define. "riddle thesaurus" 1 April 2016. Web. 20 September 2026. <https://smartdefine.org/riddle/thesaurus/related>