78 entries under difficulty topic. ×
| trickiness | |
| wearisomeness | |
| barricade | |
| check | |
| crisis | |
| crux | |
| dead end(expression, toughness) | |
| dead lift(expression, idiom) | |
| deadlock | |
| deep water(expression, toughness) | |
| dilemma | |
| emergency | |
| fix | |
| mess | |
| misfortune | |
| muddle | |
| obstacle | |
| obstruction | |
| pain | |
| painfulness |
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Hardness on
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| APA | Smart Define. (2015). hardness thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/hardness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hardness thesaurus" https://smartdefine.org/hardness/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, hardness thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/hardness/thesaurus/synonyms>. |
| MLA | Smart Define. "hardness thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/hardness/thesaurus/synonyms> |