What is another word for a?

It depends on the context! "A" can be used in many different ways.

Could you please provide more information about how you're using "a"?

For example:

* "A" as an indefinite article: If you're looking for a synonym for "a" in the sense of "one" or "any," then "an" could work.

* "A" as part of a phrase: "A lot" could be replaced with "many" or "much."

* "A" as a prefix: "Atypical" could be replaced with "uncommon" or "unusual."

Let me know the context, and I can give you a more helpful answer!