What is false as an adverb?

"False" is not typically used as an adverb. It is primarily an adjective, meaning "not true" or "not genuine."

However, you can use "falsely" as an adverb to mean "in a way that is not true" or "in a way that is not genuine."

For example:

* Adjective: "The painting is a false representation of reality."

* Adverb: "She falsely claimed to have won the lottery."