Having a harmful moral effect (especially one that is believed to spread in the manner of pestilence).
Caused by pestilence.
Causing irritation or annoyance.
Spreading in the manner of pestilence.
During which pestilence spreads.
Producing, spreading, promoting or infected with pestilence; causing infection.
Capable of causing damage or dysfunction by toxicity; (broadly) poisonous.
A toxic or poisonous substance.