What is found part of speech?

There isn't a grammatical term called "found" as a part of speech. It seems you might be referring to the past participle of the verb "find."

Here's why it's important to understand:

* Past Participles are a form of verbs that indicate a completed action. They can be used in several ways:

* As part of a verb phrase: "I have found my keys."

* As an adjective: "The found money was donated to charity."

* In passive voice: "The treasure was found by the explorers."

Therefore, "found" itself is not a part of speech, but rather a verb form that can function in various grammatical roles.

If you have any more context about how you encountered the word "found," I might be able to help you understand it better!