3
fathom(verb, separate, drain, comb, filter)
3
find the answer(expression, idiom)
3
find the solution(expression, idiom)
3
frontiers of knowledge(expression, idiom)
3
infect(verb, fill, overrun)
3
informalbrain-teaser(noun, dilemma, paradox, enigma)
3
interpenetrate
3
make a mark(expression, idiom)
3
matter of ignorance(expression, idiom)
3
mesh
3
mystery story(noun, mystery)
3
nonplus
3
not make sense(expression, idiom)
3
pepper(verb, permeate, perforate)
3
plight
3
predicament
3
puzzler(noun, show, difficulty, challenge, question)
3
quandary
3
separate(verb, arrange, organize, rank, drain)
3
shoot to death(expression, idiom)
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APASmart Define. (2016). riddle thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/riddle/thesaurus/synonyms
ChicagoSmart Define. 2016. "riddle thesaurus" https://smartdefine.org/riddle/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, riddle thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/riddle/thesaurus/synonyms>.
MLASmart Define. "riddle thesaurus" 1 April 2016. Web. 20 September 2026. <https://smartdefine.org/riddle/thesaurus/synonyms>