What part of speech is the word for?

The word "for" can be a few different parts of speech, depending on its function in a sentence. Here are the most common uses:

* Preposition: This is the most common use. It shows the relationship between a noun or pronoun and another word in the sentence.

* Example: "I bought a gift for my friend."

* Conjunction: "For" can also be a conjunction, connecting two clauses. It expresses a reason or purpose.

* Example: "I studied hard, for I wanted to get a good grade."

* Interjection: "For" can be used as an interjection to express surprise, doubt, or agreement.

* Example: "For goodness sake, be careful!"

Let me know if you have a specific sentence in mind, and I can tell you which part of speech "for" is acting as in that sentence.