59 entries under problematic topic. ×
| stiff(adjective, hard, tough, strain, rough) | |
| unyielding(adjective, hard, tough, strain, rough) | |
| rigid(adjective, hard, tough, strain, firm) | |
| difficult(adjective, tough, wild, awkward, obstinate) | |
| demanding(adjective, tough, persistent, obstinate) | |
| problem(adjective, tough, trying) | |
| unaccommodating(adjective, tough, grim, demanding) | |
| argumentative(adjective, tough, grim, trying) | |
| exacting(adjective, tough, persistent, obstinate) | |
| irritable(adjective, tough, grim, restless, obstinate) | |
| rude(adjective, tough, grim, trying) | |
| trying(tough, difficulty, grim, troublesome) | |
| challenging(adjective, tough, trying) | |
| grim(tough, firm, unreasonable, stubborn) | |
| heavy(hard, tough, solid, rigid, inflexible) | |
| irritating(tough, unpleasant, adverse, unfortunate) | |
| tiresome(tough, grim, trying, troublesome) | |
| titanic(tough, trying) | |
| ambitious(tough, trying) | |
| arduous(tough, trying, disorderly, unruly) |
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| APA | Smart Define. (2015). refractory thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, refractory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>. |
| MLA | Smart Define. "refractory thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms> |