105 entries under earnest topic. ×
| constant(adjective, strong, firm, sensible, pure) | |
| fiery(adjective, keen, warm, intense, passionate) | |
| hot-blooded(adjective, keen, warm, intense, passionate) | |
| impassioned(adjective, complete, keen, warm, total) | |
| necessary(adjective, big, important, significant, substantial) | |
| perfervid(adjective, keen, warm, intense, passionate) | |
| reserved(adjective, calm, sensible, restrained, modest) | |
| salient(adjective, big, important, significant, substantial) | |
| self-possessed(adjective, calm, sensible, relaxed, steady) | |
| single-minded(adjective, firm, sensible, steady, resolute) | |
| staunch(adjective, strong, firm, sensible, determined) | |
| steadfast(adjective, strong, firm, total, sensible) | |
| unfeigned(adjective, open, keen, warm, honest) | |
| unwavering(adjective, strong, firm, total, sensible) | |
| aboveboard(open, honest, true, straightforward, straight) | |
| actual(open, honest, true, straightforward, straight) | |
| animated(adjective, keen, warm, intense, passionate) | |
| artless(open, honest, true, straightforward, straight) | |
| blazing(adjective, keen, warm, intense, passionate) | |
| chief(adjective, great, big, heavy, important) |
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| APA | Smart Define. (2016). serious thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/serious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, serious thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>. |
| MLA | Smart Define. "serious thesaurus" 24 February 2016. Web. 29 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms> |