111 entries under serious topic. ×

13
acute(adjective, severe, pain, important, significant)
12
dark(adjective, calm, dull, quiet, bad)
12
meaningful(adjective, dull, quiet, great, tough)
11
essential(adjective, severe, importance, big, important)
11
pressing(adjective, severe, significant, substantial)
11
saturnine(adjective, dull, quiet, severe, unpleasant)
11
urgent(adjective, severe, significant, substantial)
10
influential(adjective, great, importance, important, significant)
10
pensive(adjective, bad, severe, honest, sad)
9
major(adjective, great, tough, severe, unpleasant)
8
demure(adjective, calm, quiet, cool, sober)
8
intense(adjective, quiet, severe, harsh, heavy)
8
terrible(adjective, severe, intense, unpleasant, horrible)
7
deep(adjective, sound, tough, severe, intense)
7
desperate(adjective, severe, significant, extreme)
7
pivotal(adjective, important, significant, vital)
7
threatening(adjective, tough, severe, unpleasant, deep)
7
vile(adjective, severe, intense, unpleasant, horrible)
6
no-nonsense(adjective, calm, dull, quiet, cool)
6
subdued(adjective, calm, dull, quiet, reasonable)
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APASmart Define. (2016). grave thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/grave/thesaurus/synonyms
ChicagoSmart Define. 2016. "grave thesaurus" https://smartdefine.org/grave/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, grave thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/grave/thesaurus/synonyms>.
MLASmart Define. "grave thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/grave/thesaurus/synonyms>