What part of speech is the word trusted?

The word "trusted" can be either a verb or an adjective, depending on how it's used in a sentence.

Verb:

* "I trusted him with my secret." (past tense of the verb "trust")

Adjective:

* "She is a trusted advisor." (describes the noun "advisor")

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