The most common and most likely answer to this crossword clue is the 8 letter word HIGHJACK
I've seen this crossword clue in The Times
H
I
G
H
J
A
C
K
Buddy explains!
The straight part
We know that "appropriate" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case appropriate = highjack.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 HIGHJACK mean?
HIGHJACK noun- An instance of hijacking; the illegal seizure of a vehicle; a hijacking.
- An instance of a seizure and redirection of a process.
- An amendment which deletes the contents of a bill and inserts entirely new provisions.
- Preflop, the position two before the dealer.
- To forcibly stop and seize control of some vehicle in order to rob it or to reach a destination (especially an airplane, truck or a boat).
- To seize control of some process or resource to achieve a purpose other than its originally intended one.
- To seize control of a networked computer by means of infecting it with a worm or other malware, thereby turning it into a zombie.
- To change software settings without a user's knowledge so as to force that user to visit a certain web site (to hijack a browser).
- To introduce an amendment deleting the contents of a bill and inserting entirely new provisions.