What part of speech is the word spent?

The word "spent" can be a few different parts of speech depending on how it's used in a sentence. Here's a breakdown:

* Past participle of the verb "spend": This is the most common usage. For example: "I spent all my money on candy."

* Adjective: Meaning "exhausted" or "used up". For example: "I was spent after the marathon."

* Noun: Meaning "an expense" or "money spent". This usage is less common. For example: "My monthly spends are getting out of control."

To determine the part of speech of "spent" in a specific sentence, look at its role in the sentence and its meaning.