5 entries under serious topic. ×

7
important(adjective, powerful, outstanding, worthy)
3
prominent(adjective, solid, extraordinary, important, powerful)
1
influential(adjective, solid, extraordinary, important, powerful)
0
consequential(adjective, important, prominent, exalted)
0
significant(adjective, important, prominent, exalted)
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APASmart Define. (2013). high-level thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/high-level/thesaurus/synonyms
ChicagoSmart Define. 2013. "high-level thesaurus" https://smartdefine.org/high-level/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2013, high-level thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/high-level/thesaurus/synonyms>.
MLASmart Define. "high-level thesaurus" 28 June 2013. Web. 23 September 2026. <https://smartdefine.org/high-level/thesaurus/synonyms>