The most common and most likely answer to this crossword clue is the 7 letter word BESTIRS
B
E
S
T
I
R
S
Buddy explains!
The straight part
We know that "Arouses" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case arouses = bestirs.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 BESTIRS mean?
BESTIRS verb- To put into brisk or vigorous action; to move with life and vigor.
- To make active; to rouse oneself.