I'm not familiar with the word, but the comparative degree of an adverb is formed by placing the word "more" in front of it and the superlative degree of an adverb is formed by placing the word "most" in front of it.
The comparative is greater and the superlative is greatest.
Comparative - better Superlative - best
comparative straighter and the superlative the straightest
Comparative - cuter Superlative - cutest
"Bit" is a noun and a verb and, as such, does not have a comparative or superlative form.
Dative; cloudy Caomparative; cloudier Superlative ; cloudiest
comparative : purer superlative : purest
Comparative: older Superlative: oldest
The comparative and superlativeforms of grand are: Comparative: grander Superlative: grandest
Dative; Early Comparative; Earlier Superlative; Earliest
comparative - merrier superlative - merriest
comparative = sadder superlative = saddest
The comparative is "stricter" and the superlative is "strictest".
Comparative: shallower Superlative: shallowest
The comparative is greater and the superlative is greatest.
comparative straighter and the superlative the straightest
Comparative is more and superlative is most.