What part of speech is the word later?

The word "later" can be a few different parts of speech depending on its usage:

* Adverb: This is the most common use. It modifies a verb, adjective, or another adverb, indicating time.

* Example: "We'll discuss this later."

* Adjective: It can also be an adjective, meaning "happening or coming at a later time."

* Example: "The later chapters are more exciting."

* Noun: In some cases, it can be a noun, referring to a time in the future.

* Example: "We'll meet at a later."

To determine the correct part of speech, you need to consider the context of the sentence.