If becoming just a bit more silly, "sillier"; if by far the most silly, "silliest".
Sillier would be comparing two objects, silliest, multiple things.
The superlative of ignorant is "most ignorant."
Comparative: shallower Superlative: shallowest
The comparative is "stricter" and the superlative is "strictest".
The superlative for the word generous is most generous.
comparative = sadder superlative = saddest
Superlative the silly
sillier, the silliest
sillier, silliest
The word sociable is too long (at 3 syllables) to form into comparative or superlative forms by adding a suffix, instead, you would say more sociable or most sociable. Otherwise, it will just sound silly. If you just had the 2 syllable end of the word, able, that can be formed into comparative and superlative forms with suffixes; abler, ablest.
Sleep is a noun and does not have a superlative. Sleepy is an adjective and the superlative is "sleepiest."
The superlative for willing would be "most willing." There is no one-word superlative.
"Bib" is a noun and, as such, does not have a superlative form.
"Studying" is not a superlative, as it is not an adjective. "Most studious" is a superlative of "studious."
most superlative is the superlative form of superlative
Tallest is the superlative.
superlative of quiet
bigger is the comparativebiggest is the superlative