Synonyms|43Antonyms|0|Broader|0Narrower|0Related|1
1
man-sized job
1
mind-boggler
1
mystery
1
nut to crack(expression, idiom)
1
perplexed question
1
perplexity
1
poser
1
problem
1
puzzle
1
puzzlement
1
puzzler
1
question
1
question mark
1
rough go
1
sixty-four dollar question(expression, idiom)
1
sticker
1
stumper
1
tall order
1
tough job
1
uphill work
For more, visit Tough_proposition on Power Thesaurus
11 years ago|479 views|share |citing 
APASmart Define. (2015). tough proposition thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/tough_proposition/thesaurus/synonyms
ChicagoSmart Define. 2015. "tough proposition thesaurus" https://smartdefine.org/tough_proposition/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, tough proposition thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/tough_proposition/thesaurus/synonyms>.
MLASmart Define. "tough proposition thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/tough_proposition/thesaurus/synonyms>