The most common and most likely answer to this crossword clue is the 6 plus 3 letter word INSIDE OUT
I've seen this crossword clue in The Times
I
N
S
I
D
E
O
U
T
More clues leading to the result INSIDE OUT
- Thoroughly popular team dismissed
- Batting team dismissed comprehensively
- At home and away, covering team very thoroughly
- Home eleven dismissed? Comprehensively
- Batting team dismissed, comprehensively
- Thoroughly showing what bowlers try to get
- Thoroughly fashionable 24 elsewhere
- Home team dismissed in total reversal
- Thoroughly topsy-turvy
- Home team blossoming thoroughly
Buddy explains!

The straight part
We know that "comprehensively" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case comprehensively = inside out.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 INSIDE OUT mean?
INSIDE OUT adverb- With the inside surface turned to be on the outside.
- (of knowledge) Thoroughly, extremely well.
- Describes the hitting of a ball that pitched outside of leg stump to the off side of the field.
- With the inner and outer surfaces reversed.
- Describing cross-court shots made by the unexpected hand, as of a backhand return of a ball struck to the player's forehand.
- Directed to the side; sideways.
- Slanting or sloping; oblique.
- Indirect; suggestive; not straightforward.
- Along the side of something.