The word "willingly" is an adverb, and adverbs do not typically have comparative or superlative forms like adjectives do. However, you can express comparative and superlative ideas by using phrases such as "more willingly" for the comparative and "most willingly" for the superlative. For example, "She accepted the invitation more willingly than her friend" and "He participated in the event most willingly of all the volunteers."
comparative - merrier superlative - merriest
comparative = tenderer superlative = tenderest
The comparative is later, and the superlative is latest
comparative and superlative of legibly
comparative=tenser superlative =tensest
The superlative for willing would be "most willing." There is no one-word superlative.
comparative : purer superlative : purest
Comparative: older Superlative: oldest
Dative; Early Comparative; Earlier Superlative; Earliest
The comparative and superlativeforms of grand are: Comparative: grander Superlative: grandest
comparative - merrier superlative - merriest
Comparative: shallower Superlative: shallowest
The comparative is "stricter" and the superlative is "strictest".
comparative = sadder superlative = saddest
The comparative is greater and the superlative is greatest.
comparative - rockier superlative - rockiest
Comparative - better Superlative - best