Friendlier or more friendly are the comparatives, and friendliest or most friendly are the superlatives.
The comparative and superlative degrees of unfriendly are unfriendlier and unfriendliest. Less friendly and least friendly would also be good ways of conveying those ideas.
The comparative and superlative degrees of clean are cleaner and cleanest.
Get is a verb and does not have comparative or superlative degrees.
Nouns don't have superlative degrees.
the superlative of friendly is friendliest
friendlier, friendliest
out
Either is not an adjective. It has no degrees.
The comparative form of "friendly" is "friendlier," and the superlative form is "friendliest."
your ugly>3 Uh.. kay. Friendliest (Or "most friendly")
best
friendlier, friendliest