Imperative
Extremely
hectic
Serene means extremely content or peaceful.
There is no such word as 'essential' however, there is the word essential. Essential is both an adjective and a noun depending on how it is being used in a sentence. It means absolutely necessary or extremely important.
Vital Means extremely important and necessary! :)
I don't know WHY 2 r ARE in a word
Facinorous means extremely wicked.
The word is satanic. It means extremely evil or wicked.
I believe you are referring to the word "humongous", which means extremely large or huge.
Euphoria is an extremely positive sense of happiness or confidence.
Word-Level inference is an extremely important part of analytical writing.
The word "major" means most important and the word "minor" means less important.