Synonyms|768Antonyms|230|Broader|9Narrower|0Related|1.3k

77 entries under severe topic. ×

1
merciless(adjective, appearance, tough, rough)
1
no joke(expression, adjective, tough, important)
1
no laughing matter(expression, adjective, idiom, tough)
1
of consequence(expression, adjective, tough, important)
1
out for blood(expression, adjective, idiom, tough)
1
playing hard ball(expression, adjective, idiom, tough)
1
smoking(adjective, tough, important, significant)
1
sobering(adjective, tough, important, significant)
1
strictly business(expression, adjective, tough, important)
1
unamusing(adjective, tough, important, significant)
1
unhumorous(adjective, tough, important, deep)
1
unyielding(appearance, tough, terrible, painful)
1
vexatious(adjective, hard, evil, rough)
1
worrying(adjective, tough, important, significant)
0
austere(appearance, harsh, heavy, terrible)
0
excessive(great, harsh, heavy, painful)
0
testing(adjective, difficult, violent, awkward)
For more, visit Formidable on Power Thesaurus
11 years ago|23k views|share |citing 
APASmart Define. (2015). formidable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/formidable/thesaurus/synonyms
ChicagoSmart Define. 2015. "formidable thesaurus" https://smartdefine.org/formidable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, formidable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/formidable/thesaurus/synonyms>.
MLASmart Define. "formidable thesaurus" 17 July 2015. Web. 22 September 2026. <https://smartdefine.org/formidable/thesaurus/synonyms>