61 entries under extraordinary topic. ×

48
important(adjective, good, bad, strong, great)
39
significant(adjective, good, clear, strong, great)
35
weighty(adjective, good, clear, strong, tough)
31
remarkable(adjective, importance, important, lively)
30
serious(adjective, good, great, severe)
25
crucial(adjective, great, tough, severe)
22
notable(adjective, solid, importance, unusual)
20
memorable(adjective, great, superior, importance)
19
critical(adjective, great, severe, big)
15
impressive(adjective, bad, strong, great, excellent)
15
outstanding(adjective, excellent, superior, importance)
13
noteworthy(adjective, great, solid, big)
12
meaningful(adjective, good, clear, strong, great)
11
eventful(adjective, bad, great, excellent)
11
signal(adjective, great, solid, importance)
10
decisive(adjective, great, big, important)
9
prominent(adjective, good, strong, solid)
5
distinguished(adjective, bad, great, excellent)
5
eminent(adjective, good, bad, great, excellent)
4
salient(adjective, solid, importance, big)
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APASmart Define. (2016). momentous thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/momentous/thesaurus/synonyms
ChicagoSmart Define. 2016. "momentous thesaurus" https://smartdefine.org/momentous/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, momentous thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/momentous/thesaurus/synonyms>.
MLASmart Define. "momentous thesaurus" 1 April 2016. Web. 1 October 2026. <https://smartdefine.org/momentous/thesaurus/synonyms>