What are the comparative and superlative degree of kindly?

The word "kindly" is already an adverb, meaning "in a kind or gentle way." It doesn't have comparative or superlative forms in the traditional sense.

However, you can express degrees of kindness by using adverbs like:

* More kindly (comparative)

* Most kindly (superlative)

You can also use phrases like:

* More kindly than

* Most kindly of all

For example:

* She treated him more kindly than her other guests.

* Of all the guests, he spoke most kindly to the host.