4
danger(noun, difficulty, risk, danger, peril)
4
risk(noun, difficulty, danger, peril)
3
hazard(noun, danger)
3
hazardousness(noun, concern, difficulty, importance, risk)
3
treachery(noun, danger)
2
insecurity
2
peril(difficulty, risk)
2
riskiness
1
acuteness(concern, importance, severity, gravity, seriousness)
1
adventure
1
bulkiness(difficulty, risk, peril)
1
chanciness(difficulty, risk, peril)
1
cumbersomeness(difficulty, risk, peril)
1
delicacy
1
endangerment(noun, danger)
1
gravity(noun, concern, importance, seriousness)
1
inconvenience(difficulty, peril)
1
infirmity
1
instability
1
insubstantiality
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APASmart Define. (2015). perilousness thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/perilousness/thesaurus/synonyms
ChicagoSmart Define. 2015. "perilousness thesaurus" https://smartdefine.org/perilousness/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, perilousness thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/perilousness/thesaurus/synonyms>.
MLASmart Define. "perilousness thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/perilousness/thesaurus/synonyms>