What part of speech is the word lost?

The word "lost" can be a few different parts of speech, depending on its use in a sentence.

Here's a breakdown:

* Adjective: Describing a state of being missing or no longer possessed.

* Example: "The lost dog was found wandering the park."

* Verb: Describing the act of misplacing or no longer having something.

* Example: "I lost my keys."

* Past participle: Used to form perfect tenses or passive voice.

* Example: "The phone has been lost."

Let me know if you have a specific sentence in mind and I can help determine the part of speech!