115 entries under heavy topic. ×
| fierce(intense, aper, demoniac, annihilative) | |
| fleshy(big, substantial) | |
| forcible(big, substantial) | |
| grueling(adjective, severe, difficult, harsh) | |
| heightened(adjective, intense, fierce) | |
| herculean(adjective, tough, rough, difficult) | |
| killing(adjective, acute, dangerous, crucial) | |
| major league(expression, great) | |
| obese(big, substantial) | |
| of great consequence(expression, adjective, idiom, acute) | |
| ominous(adjective, unpleasant, horrible, disagreeable) | |
| overweight(big, substantial) | |
| porcine(big, substantial) | |
| portly(big, substantial) | |
| stout(big, significant, substantial, large) |
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| APA | Smart Define. (2016). serious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/serious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, serious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>. |
| MLA | Smart Define. "serious thesaurus" 24 February 2016. Web. 28 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms> |