What are the comparative and superlative forms of loudly?

"Loudly" is an adverb, and adverbs don't typically have comparative and superlative forms.

To express degrees of loudness, you would use comparative and superlative forms of the adjective "loud":

* Comparative: Louder

* Superlative: Loudest

You could also use adverbs like:

* More loudly

* Most loudly

However, these are less common than using the comparative and superlative forms of the adjective.