“Sick!”

The answer to this crossword question is likely the word “slang” as it pertains to contemporary language. The clue “‘Sick!’ is DOPE” suggests that the answer is a word or term that may be considered as slang or informal language. The word “sick” is a term used to describe something that is considered cool or impressive, while the word “dope” is a slang term used to describe something that is considered exceptional or excellent. Therefore, “slang” would be an accurate answer to the crossword question as it is a term that pertains to the use of informal language such as “sick” and “dope”.