- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
92 entries under severe topic. ×
| strenuous(adjective, tough, rough, difficult) | |
| surly(adjective, mean, hard, tough) | |
| tiring(adjective, tough, rough, difficult) | |
| toilsome(adjective, tough, rough, difficult) | |
| troublesome(adjective, tough, rough, difficult) | |
| unamiable(adjective, hard, tough, cold) | |
| uncordial(adjective, hard, tough, cold) | |
| unemotional(adjective, hard, tough, cold) | |
| galling(adjective, harsh, unpleasant, heavy) | |
| grueling(adjective, difficult, harsh, heavy) | |
| tyrannous(adjective, harsh, cruel) | |
| vexatious(adjective, harsh, unpleasant, heavy) |
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| APA | Smart Define. (2016). merciless thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/merciless/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "merciless thesaurus" https://smartdefine.org/merciless/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, merciless thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/merciless/thesaurus/synonyms>. |
| MLA | Smart Define. "merciless thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/merciless/thesaurus/synonyms> |