* Preposition: When it introduces a phrase that shows an exception to a general statement.
* Example: "Everyone went to the party except John."
* Conjunction: When it connects two phrases or clauses that contrast with each other.
* Example: "I like all kinds of fruits except bananas."
* Verb: In very rare cases, "except" can be used as a verb meaning "to exclude."
* Example: "The rule excepts those who are under 18."
So, there isn't one single part of speech for "except." Its function is determined by its context within the sentence.