What part of speech is reprobate?

Reprobate can be categorized as a noun and a verb.

Parts of speech

1. reprobate is a verb, present, 1st person singular of reprobate (infinitive).
2. reprobate is a verb (infinitive).
3. reprobate is a noun, singular of reprobates.

Adjective
reprobate - Rejected; cast off as worthless.
reprobate - Rejected by God; damned, sinful.
reprobate - Immoral, having no religious or principled character.
Verb
reprobate - abandon to eternal damnation; "God reprobated the unrepenting sinner"
reprobate - reject (documents) as invalid
reprobate - express strong disapproval of; "We condemn the racism in South Africa"; "These ideas were reprobated"
Noun
reprobate - a person without moral scruples