pestilent

As an adjective pestilent

is highly injurious or destructive to life: deadly.

As a verb plague is

.

As adjectives the difference between pestilent and pernicious

is that pestilent is highly injurious or destructive to life: deadly while pernicious is causing much harm in a subtle way.

is likely misspelled.

has no English definition.

As an adjective pestilent

is highly injurious or destructive to life: deadly.

As adjectives the difference between pestilent and fatal

is that pestilent is highly injurious or destructive to life: deadly while fatal is proceeding from, or appointed by, fate or destiny.

As a noun fatal is

a fatality; an event that leads to death.

As an adjective pestilent is

highly injurious or destructive to life: deadly.

As adjectives the difference between pestilent and petulant

is that pestilent is highly injurious or destructive to life: deadly while petulant is childishly irritable.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective pestilent is

highly injurious or destructive to life: deadly.

As an adjective pestilent

is highly injurious or destructive to life: deadly.

As an adverb pestilently is

in a pestilent manner.

As adjectives the difference between pestilent and consarned

is that pestilent is highly injurious or destructive to life: deadly while consarned is (dialectal) darn; pestilent.

As a verb consarned is

(consarn).

As an adverb consarned is

(dialectal) darned; quite.