What is the comparative form of kindly?

"Kindly" is already an adverb, and adverbs don't typically have comparative forms.

If you're looking for a word to express a higher degree of kindness, you could use:

* More kindly

* Very kindly

* Most kindly

* Extremely kindly

* Incredibly kindly

For example, you might say:

* "He helped me more kindly than anyone else."

* "She spoke to me very kindly, considering the circumstances."