82 entries under big topic. ×

5
distinguished(adjective, bad, great, excellent, extraordinary)
5
heavy(adjective, great, tough, severe)
5
pressing(adjective, tough, severe, heavy)
5
primary(adjective, superior, unusual, important)
4
heavyweight(adjective, heavy, important, outstanding)
4
salient(adjective, solid, extraordinary, importance)
4
severe(adjective, tough, heavy, important)
3
imperative(adjective, important, determined, significant)
3
large(adjective, significant, substantial, valuable)
2
burdensome(adjective, heavy, substantial)
2
conspicuous(adjective, great, solid, extraordinary)
2
exceptional(adjective, bad, great, excellent, solid)
2
marked(adjective, great, solid, extraordinary, superior)
2
of moment(expression, adjective, important, substantial)
2
paramount(adjective, good, important, significant)
2
sedate(heavy, substantial)
2
sober(adjective, energetic, heavy, substantial)
2
staid(heavy, substantial)
2
standout(adjective, bad, great, excellent, extraordinary)
2
super(adjective, good, bad, great, extraordinary)
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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>