149 entries under important topic. ×

16
pressing(adjective, hard, tough, difficult, big)
15
dangerous(adjective, help, bad, great, severe)
15
crucial(adjective, great, severe, extraordinary, big)
15
meaningful(adjective, good, great, severe, extraordinary)
14
acute(adjective, severe, harsh, heavy)
14
big(adjective, good, importance, heavy)
14
urgent(adjective, hard, tough, severe, difficult)
13
material(adjective, good, importance, big, heavy)
12
considerable(adjective, importance, big, heavy)
12
key(adjective, importance, valuable, main)
11
deep(adjective, keen, significant, thoughtful)
11
essential(adjective, severe, importance, big)
11
influential(adjective, good, great, importance)
11
notable(adjective, great, extraordinary, importance, unusual)
10
major(adjective, great, unpleasant, heavy)
10
outstanding(adjective, great, importance, unusual)
10
steady(adjective, calm, set, cool, firm)
10
terrible(adjective, bad, great, difficult, extraordinary)
9
remarkable(adjective, importance, unusual, famous)
8
dignified(adjective, calm, cool, severe)
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APASmart Define. (2016). serious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/serious/thesaurus/synonyms
ChicagoSmart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, serious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>.
MLASmart Define. "serious thesaurus" 24 February 2016. Web. 24 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms>