What is the comparative and superlative to word cruelly?

Here's the breakdown of comparative and superlative forms for "cruelly," which is an adverb:

* Cruelly is already in the positive degree.

* More cruelly is the comparative degree.

* Most cruelly is the superlative degree.

Example:

* Positive: He treated the animal cruelly.

* Comparative: She treated the animals more cruelly than he did.

* Superlative: Of all the rulers, he was the one who treated his subjects most cruelly.