pestilential

Pestilent.

Producing or tending to produce infectious disease; pestiferous.

Mischievous; pernicious; destructive.

Partaking of the nature of pestilence or any infectious and deadly disease: as, a pestilential fever. See fever.

Having the nature or qualities of a pestilence.

Hence: Mischievous; noxious; pernicious; morally destructive.

Producing pestilence or plague; pestilent

likely to spread and cause an epidemic disease