The most common and most likely answer to this crossword clue is the 9 letter word BEGRUDGED
I've seen this crossword clue in The Times
B
E
G
R
U
D
G
E
D
Buddy explains!
The straight part
We know that "Resented" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case resented = begrudged.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 BEGRUDGED mean?
BEGRUDGED verb- To grudge about or over; be envious or covetous.
- To be reluctant
- To give reluctantly.