What are the comparative and superlative forms for word chubby?

The word "chubby" is already in its positive form. It doesn't typically have comparative or superlative forms.

However, you can use these alternatives to convey different degrees of "chubby":

Comparative:

* Chubbier: This is a more informal way to say "more chubby."

* Plumper: This is a more formal and less negative way to say "more chubby."

* Rounder: This suggests a more full or rounded shape, and is less focused on weight.

Superlative:

* Chubbiest: This is the most informal and potentially negative way to say "most chubby."

* Plumpest: This is a more formal and less negative way to say "most chubby."

* Roundest: This emphasizes a full and rounded shape.

It's important to be mindful of the potential negative connotations of using these words, especially in situations where you're describing someone else.