6
conundrum(noun, trouble, challenge, question, secret)
2
deal breaker(noun, challenge, case, matter, knot)
2
horror
1
physics(noun, issue, challenge, case, matter)
1
quantum physics
1
under the radar
0
agony
0
backbone
0
backrest
0
bamboozler
0
bear
0
beast
0
bitterly
0
blocker
0
bonnet
0
bother
0
brainteaser
0
brusher
0
calm
0
cap
10 years ago|3 views|share |citing 
APASmart Define. (2016). stumper thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stumper/thesaurus/related
ChicagoSmart Define. 2016. "stumper thesaurus" https://smartdefine.org/stumper/thesaurus/related (accessed September 24, 2026).
HarvardSmart Define 2016, stumper thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stumper/thesaurus/related>.
MLASmart Define. "stumper thesaurus" 29 February 2016. Web. 24 September 2026. <https://smartdefine.org/stumper/thesaurus/related>