| beneficially | |
| benevolently | |
| bigly | |
| boisterously(adverb, fast, sprightly, severely, intensely) | |
| brutal | |
| brutally(adverb, fast, sprightly, severely, intensely) | |
| carefully(vigorously, earnestly, actively, hastily, energetically) | |
| clearly | |
| committedly | |
| completely(adverb, severely, really, thoroughly, intensely) | |
| conscience | |
| consequentially | |
| considerably | |
| contemplatively | |
| cool it(expression, adverb, earnestly, actively, truly) | |
| cross one's heart | |
| crucially | |
| cruelly(adverb, fast, sprightly, severely, intensely) | |
| cut the comedy(expression, idiom, adverb, actively, truly) | |
| dearly |
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| APA | Smart Define. (2016). seriously thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/seriously/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "seriously thesaurus" https://smartdefine.org/seriously/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, seriously thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/seriously/thesaurus/synonyms>. |
| MLA | Smart Define. "seriously thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/seriously/thesaurus/synonyms> |