115 entries under difficulty topic. ×
| sixty-four-thousand-dollar question(expression, question, secret, puzzle) | |
| snag(noun, trouble, pain, struggle) | |
| stumper(question, secret, puzzle, knot) | |
| teaser(question, secret, puzzle, knot) | |
| why(question, secret, puzzle, knot) | |
| abstruseness(question, secret, puzzle, obscurity) | |
| adversity(noun, trouble, burden, pain) | |
| affliction(noun, burden, suffering, something) | |
| arduousness(noun, trouble, pain, struggle) | |
| awkwardness(noun, trouble, pain, struggle) | |
| barricade(noun, trouble, pain, struggle) | |
| brainteaser(question, secret, puzzle, obscurity) | |
| braintwister(question, secret, puzzle, obscurity) | |
| burden(noun, quality, body, character, strength) | |
| charade(question, secret, puzzle, obscurity) | |
| check(noun, trouble, pain, struggle) | |
| chiller(question, secret, puzzle, obscurity) | |
| cliffhanger(question, secret, puzzle, knot) | |
| complication(noun, trouble, pain, struggle) | |
| crucial point(noun, expression, idiom, trouble) |
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| APA | Smart Define. (2015). crux thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/crux/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "crux thesaurus" https://smartdefine.org/crux/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, crux thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/crux/thesaurus/synonyms>. |
| MLA | Smart Define. "crux thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/crux/thesaurus/synonyms> |