The superlative form of "unusual" is "most unusual." In English grammar, the superlative form is used to compare three or more things to show which is the highest or lowest in a certain quality. In this case, "most unusual" indicates the highest level of being out of the ordinary or uncommon.
more unusual, most unusual
more unusual, most unusual
more unusual, most unusual
Because original is four syllables, it uses "more" and "most". comparative = more original; superlative = most origina.
most thrilling
The sun was a most unusual color last night. [error] The answer to your question was more unusual than most. [correct, but confusing] ============================================================== In the above two examples, the first one is the superlative, not the comparative. The comparative is formed either by adding the suffix "er" to a word or by placing the word "more" before it. With some words, you have a choice, which can be made according to your personal style and preference. With respect to the comparative of "unusual," however, common usage is not "unusualer" but rather "more unusual." The superlative is formed either by adding the suffix "est" to a word or by placing the word "most" before it. Again, there is sometimes a choice. Common usage here dictates "most unusual" rather than "unusualest."
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.
"Studying" is not a superlative, as it is not an adjective. "Most studious" is a superlative of "studious."
"Bib" is a noun and, as such, does not have a superlative form.
most superlative is the superlative form of superlative
Tallest is the superlative.