Synonyms|213Antonyms|17|Broader|0Narrower|1Related|152
1
killing
1
laboured
1
meaning business(expression, adjective, tough, severe, important)
1
meaningful(adjective, tough, severe, important, significant)
1
murder(adjective, hard, tough, severe, rough)
1
no joke(expression, adjective, tough, severe, important)
1
no laughing matter(expression, adjective, idiom, tough, severe)
1
of consequence(expression, adjective, tough, severe, important)
1
out for blood(expression, adjective, idiom, tough, severe)
1
persevering
1
persistent
1
playing hard ball(expression, adjective, idiom, tough, severe)
1
plugging
1
problem(tough, severe, painful, problematic, trying)
1
prohibitive(tough, severe, painful, problematic, trying)
1
rigid(tough, severe, painful, problematic, trying)
1
set with thorns(expression, idiom)
1
smoking(adjective, tough, severe, important, significant)
1
sobering(adjective, tough, severe, important, significant)
1
spiny
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APASmart Define. (2015). operose thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/operose/thesaurus/synonyms
ChicagoSmart Define. 2015. "operose thesaurus" https://smartdefine.org/operose/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, operose thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/operose/thesaurus/synonyms>.
MLASmart Define. "operose thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/operose/thesaurus/synonyms>