The most common and most likely answer to this crossword clue is the 9 letter word DISPLEASE
I've seen this crossword clue in The Daily Telegraph
D
I
S
P
L
E
A
S
E
More clues leading to the result DISPLEASE
Buddy explains!
The straight part
We know that "anger" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case anger = displease.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 DISPLEASE mean?
DISPLEASE verb- To make not pleased; to cause a feeling of disapprobation or dislike in; to be disagreeable to; to vex slightly.
- To give displeasure or offense.
- To fail to satisfy; to miss of.