What are the comparative and superlative of word friendly?

The word "friendly" is already an adjective, so it doesn't have comparative and superlative forms in the traditional sense. However, we can use these alternatives:

Comparative:

* More friendly (This is the most common way to express a higher degree of friendliness)

* Friendlier (This is less common but grammatically correct)

Superlative:

* Most friendly (This is the most common way to express the highest degree of friendliness)

* Friendliest (This is less common but grammatically correct)

It's important to note that the choice between "more/most friendly" and "friendlier/friendliest" is primarily a matter of personal preference and style.