113 entries under idiom topic. ×

4
nut to crack(expression, difficulty, secret)
4
vexed question(noun, expression, trouble, difficulty)
3
jigsaw puzzle(noun, expression)
2
brain teaser
2
bring up short(verb, expression, drop, baffle)
2
difficult problem(noun, expression, question, riddle)
2
keep in suspense(expression, uncertainty)
2
knotty point(expression, difficulty)
2
render uncertain(expression, upset, trouble, obscure)
2
sealed book(expression, unintelligibility)
2
throw off balance(expression, upset, trouble, obscure)
2
tough nut to crack(expression, question, secret, mystery)
1
apply the mind
1
be the matter
1
beat around the bush(expression, avoid, escape, frustrate)
1
beat the system(expression, cross, frustrate, blank)
1
blow out of the water(verb, expression, upset, beat)
1
catch one short(verb, expression, upset, bother)
1
do or die(expression, event, fight, struggle)
1
dog eat dog(expression, event, fight, struggle)
10 years ago|17k views|share |citing 
APASmart Define. (2016). puzzle thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/puzzle/thesaurus/synonyms
ChicagoSmart Define. 2016. "puzzle thesaurus" https://smartdefine.org/puzzle/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, puzzle thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/puzzle/thesaurus/synonyms>.
MLASmart Define. "puzzle thesaurus" 15 March 2016. Web. 20 September 2026. <https://smartdefine.org/puzzle/thesaurus/synonyms>