26 entries under adjective topic. ×

4
serious(weighty, aper, demoniac, crucial)
2
smoking(tough, severe, important, significant)
1
deep(tough, severe, difficult, important)
1
far-reaching(tough, severe, important, significant)
1
fateful(tough, severe, important, significant)
1
fell(severe, weighty, aper, demoniac)
1
formidable(tough, severe, important, significant)
1
grave(tough, severe, deep, meaningful)
1
hard(tough, severe, important, significant)
1
laborious(tough, severe, important, significant)
1
meaning business(expression, tough, severe, important)
1
meaningful(tough, severe, important, significant)
1
no joke(expression, tough, severe, important)
1
no laughing matter(expression, idiom, tough, severe)
1
of consequence(expression, tough, severe, important)
1
operose(tough, severe, important, significant)
1
out for blood(expression, idiom, tough, severe)
1
playing hard ball(expression, idiom, tough, severe)
1
sobering(tough, severe, important, significant)
1
strictly business(expression, tough, severe, important)
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APASmart Define. (2015). unamusing thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unamusing/thesaurus/synonyms
ChicagoSmart Define. 2015. "unamusing thesaurus" https://smartdefine.org/unamusing/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unamusing thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unamusing/thesaurus/synonyms>.
MLASmart Define. "unamusing thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/unamusing/thesaurus/synonyms>