ಅರ್ಥ : Exceedingly harmful.
ಸಮಾನಾರ್ಥಕ : baneful, deadly, pernicious
ಅರ್ಥ : Likely to spread and cause an epidemic disease.
ಉದಾಹರಣೆ :
A pestilential malignancy in the air.
Plaguey fevers.
ಸಮಾನಾರ್ಥಕ : pestiferous, pestilential, plaguey