15 entries under expression topic. ×

2
closed book(question, secret, puzzle, subtlety)
2
sixty-four-thousand-dollar question(question, secret, puzzle, subtlety)
2
tough nut to crack(idiom, question, secret, puzzle)
1
nut to crack(idiom, secret)
1
picture puzzle
0
and what not(idiom, multiformity)
0
confidential information(perplexity, abstruseness, inscrutableness)
0
crux criticorum(idiom, secret)
0
full tilt(idiom, activity)
0
magic number(perplexity, abstruseness, inscrutableness)
0
of every description(idiom, multiformity)
0
privileged information(perplexity, abstruseness, inscrutableness)
0
skeleton in cupboard(idiom, perplexity, abstruseness, inscrutableness)
0
with haste(idiom, activity)
0
with wings(idiom, activity)
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APASmart Define. (2015). rebus thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/rebus/thesaurus/synonyms
ChicagoSmart Define. 2015. "rebus thesaurus" https://smartdefine.org/rebus/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, rebus thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/rebus/thesaurus/synonyms>.
MLASmart Define. "rebus thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/rebus/thesaurus/synonyms>