Probably a back-formation from pestilentus, from pestis (“disease, plague; pest; destruction”).
pestilēns (genitive pestilentis); third-declension one-termination adjective
Third-declension one-termination adjective.
singular | plural | ||||
---|---|---|---|---|---|
masc./fem. | neuter | masc./fem. | neuter | ||
nominative | pestilēns | pestilentēs | pestilentia | ||
genitive | pestilentis | pestilentium | |||
dative | pestilentī | pestilentibus | |||
accusative | pestilentem | pestilēns | pestilentēs | pestilentia | |
ablative | pestilentī | pestilentibus | |||
vocative | pestilēns | pestilentēs | pestilentia |
From pestilēns (“noxious, pestilent”).
pestilēns m (genitive pestilentis); third declension
Third-declension noun.
singular | plural | |
---|---|---|
nominative | pestilēns | pestilentēs |
genitive | pestilentis | pestilentum |
dative | pestilentī | pestilentibus |
accusative | pestilentem | pestilentēs |
ablative | pestilente | pestilentibus |
vocative | pestilēns | pestilentēs |