What part of speech is well in the sentence Well I am not sure about your question?

In the sentence "Well, I am not sure about your question," the word "well" is an interjection.

Here's why:

* Interjections are words or phrases that express strong emotion or sudden feeling. They are often set off by commas or exclamation points.

* In this case, "well" is used to express hesitation or uncertainty, similar to saying "um" or "uh."

Let me know if you have any other questions!