The superlative of charming is "most charming."
more charming (comparative) most charming (superlative)
Charmer
The word "cutest" is an adjective, specifically a superlative form of the adjective "cute." It is used to describe something as the most attractive or endearing in terms of being charming or adorable.
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
smallest is the superlative. (est is the standard superlative ending._