The most common and most likely answer to this crossword clue is the 7 letter word TOTALLY
I've seen this crossword clue in The Times
T
O
T
A
L
L
Y
More clues leading to the result TOTALLY
Buddy explains!

The straight part
We know that "Absolutely" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case absolutely = totally.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TOTALLY mean?
TOTALLY adverb- To the fullest extent or degree.
- (degree) Very; extremely.
- (modal) Definitely; for sure.