Synonyms|181Antonyms|101|Broader|3Narrower|0Related|513
4
injurious(adjective, unhealthy, harmful, dangerous, fatal)
4
insalubrious(adjective, unhealthy, harmful, poisonous, toxic)
4
irritating
4
noisome(harmful, poisonous, toxic, insalubrity)
4
pesky
4
plaguey
4
unwholesome(adjective, unhealthy, harmful, poisonous, virulent)
4
venomous(adjective, unhealthy, harmful, fatal, unwholesome)
3
annoying
3
destructive(adjective, unhealthy, harmful, dangerous, fatal)
3
detrimental(adjective, harmful, dangerous, poisonous, toxic)
3
diseased(adjective, unhealthy, dangerous, diseased)
3
epidemic
3
importunate
3
infected(adjective, unhealthy, diseased)
3
pestering
3
plaguy(adjective, evil, dislike, disgusting, beastly)
3
teasing
3
toxic(adjective, unhealthy, harmful, fatal, unwholesome)
3
troublesome(adjective, dangerous)
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APASmart Define. (2015). pestilent thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/pestilent/thesaurus/synonyms
ChicagoSmart Define. 2015. "pestilent thesaurus" https://smartdefine.org/pestilent/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, pestilent thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/pestilent/thesaurus/synonyms>.
MLASmart Define. "pestilent thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/pestilent/thesaurus/synonyms>