Synonyms|213Antonyms|17|Broader|0Narrower|1Related|152

24 entries under momentous topic. ×

1
sobering(adjective, tough, severe, important, significant)
1
strictly business(expression, adjective, tough, severe, important)
1
unamusing(adjective, tough, severe, important, significant)
1
worrying(adjective, tough, severe, important, significant)
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APASmart Define. (2015). operose thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/operose/thesaurus/synonyms
ChicagoSmart Define. 2015. "operose thesaurus" https://smartdefine.org/operose/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, operose thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/operose/thesaurus/synonyms>.
MLASmart Define. "operose thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/operose/thesaurus/synonyms>