110 entries under adjective topic. ×

20
momentous(importance, important, main, extremely significant)
16
significant(importance, important, main, remarkable)
14
important(important, lively, significant, remarkable)
14
iconic
13
notable(importance, main, remarkable, momentous)
11
consequential(importance, important, main, remarkable)
11
memorable(important, lively, significant, remarkable)
11
outstanding(importance, main, remarkable, momentous)
11
traditional(state, quality, important, fashion)
9
big(importance, important, main, extremely significant)
9
substantial(importance, important, main, extremely significant)
9
material(importance, important, main, extremely significant)
9
meaningful(importance, important, main, extremely significant)
9
serious(importance, important, main, extremely significant)
9
weighty(importance, main, extremely significant)
8
great(importance, main, extremely significant)
8
impressive(importance, main, extremely significant)
8
considerable(importance, important, main, extremely significant)
8
key(importance, important, main, extremely significant)
8
vital(importance, important, main, extremely significant)
10 years ago|7.1k views|share |citing 
APASmart Define. (2016). historic thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/historic/thesaurus/synonyms
ChicagoSmart Define. 2016. "historic thesaurus" https://smartdefine.org/historic/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, historic thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/historic/thesaurus/synonyms>.
MLASmart Define. "historic thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/historic/thesaurus/synonyms>