The most common and most likely answer to this crossword clue is the 7 letter word BLAGGED
I've seen this crossword clue in The Guardian
B
L
A
G
G
E
D
Buddy explains!

The straight part
We know that "scrounged" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case scrounged = blagged.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 BLAGGED mean?
BLAGGED verb- To obtain (something) for free, particularly by guile or persuasion.
- (specifically) To obtain confidential information by impersonation or other deception.
- To pick up someone.
- (1960s) To inveigle by persuasion.
- (1940s) To deceive; to perpetrate a hoax on.