1
mean(adjective, tough, nasty, offensive, terrible)
1
miasmal
1
miasmatic
1
miasmic
1
mocking
1
muddy
1
murderous(injurious, damaging, destructive, fatal, poisonous)
1
narcotic
1
nasty(adjective, offensive, unpleasant, terrible, disgusting)
1
nauseating(adjective, bad, nasty, offensive, foul)
1
nettling
1
nocuous(injurious, damaging, destructive, noxious, toxic)
1
odious(adjective, nasty, offensive, terrible, disgusting)
1
offensive(adjective, bad, evil, nasty, terrible)
1
ornery(adjective, nasty, offensive, terrible, disgusting)
1
pandemic
1
pathogenic
1
peccant
1
peckish
1
plaguesome
11 years ago|8.5k views|share |citing 
APASmart Define. (2015). pestiferous thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/pestiferous/thesaurus/synonyms
ChicagoSmart Define. 2015. "pestiferous thesaurus" https://smartdefine.org/pestiferous/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, pestiferous thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/pestiferous/thesaurus/synonyms>.
MLASmart Define. "pestiferous thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/pestiferous/thesaurus/synonyms>