40 entries under task topic. ×

66
riddle(noun, trouble, show, difficulty, challenge)
56
conundrum(noun, trouble, show, difficulty, difficult)
43
puzzle(noun, trouble, show, dispute, difficulty)
35
secret(noun, trouble, challenge, question, puzzle)
15
puzzlement(noun, trouble, challenge, question, secret)
10
why(noun, trouble, informal, challenge, question)
9
dilemma(noun, trouble, difficult, issue, challenge)
9
crux(noun, trouble, challenge, question, secret)
8
head-scratcher(noun, trouble, difficult, issue, challenge)
6
crossword(noun, difficult, issue, question)
6
difficulty(noun, trouble, difficult, issue, challenge)
5
anagram(noun, question, problem, secret, puzzle)
5
quiz(noun, verb, difficult, issue, think)
4
nonplus(noun, verb, difficult, issue, think)
4
quandary(noun, trouble, difficult, issue, challenge)
4
obscurity(noun, difficult, issue, question, secret)
4
trouble(noun, verb, adjective, difficult, issue)
4
challenge(noun, verb, difficulty, difficult, issue)
4
desideratum(noun, difficult, issue, question)
4
discord(noun, verb, difficult, issue, think)
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APASmart Define. (2016). enigma thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/enigma/thesaurus/synonyms
ChicagoSmart Define. 2016. "enigma thesaurus" https://smartdefine.org/enigma/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, enigma thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/enigma/thesaurus/synonyms>.
MLASmart Define. "enigma thesaurus" 1 April 2016. Web. 20 September 2026. <https://smartdefine.org/enigma/thesaurus/synonyms>