What is the adverb of hear?

There isn't a direct adverb for the verb "hear". However, you can use adverbs to describe how someone hears or when someone hears.

Here are some examples:

How:

* Clearly: I could hear the music clearly.

* Distantly: I heard a car engine running distantly.

* Loudly: We heard the thunder loudly.

* Softly: I heard her footsteps softly approaching.

When:

* Suddenly: I suddenly heard a loud bang.

* Later: I heard about the accident later.

* Recently: I have recently heard good news about her.

You can also use adverbs to describe the manner in which someone is listening:

* Attentively: She listened attentively to the story.

* Carefully: He listened carefully to the instructions.

The best adverb to use will depend on the specific context of your sentence.