What part of speech is prevail?

"Prevail" can be both a verb and an adjective, depending on its usage.

Verb: When used as a verb, "prevail" means:

* To prove more powerful than opposing forces; triumph.

* To be widespread or current.

Example:

* Verb: "Justice will prevail."

Adjective: When used as an adjective, "prevail" means:

* Widespread or common.

Example:

* Adjective: "The prevailing view was that..."

Therefore, to determine the part of speech, you need to analyze the sentence's context.