What are the comparative and superlative of word clearly?

The word "clearly" is already an adverb, meaning it describes a verb. Therefore, it doesn't have comparative or superlative forms.

If you want to express degrees of clarity, you can use adverbs like:

* More clearly (comparative)

* Most clearly (superlative)

* Very clearly

* Extremely clearly

* Perfectly clearly

You could also use adjectives like:

* Clearer (comparative)

* Clearest (superlative)

For example:

* He explained the instructions more clearly this time.

* She spoke most clearly of all the candidates.

* The picture was perfectly clear.