The most common and most likely answer to this crossword clue is the 10 letter word DISPLEASED
I've seen this crossword clue in The Guardian
D
I
S
P
L
E
A
S
E
D
More clues leading to the result DISPLEASED
Buddy explains!

The straight part
We know that "caused annoyance" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case caused annoyance = displeased.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.
Crossword Answer definitions
DISPLEASED 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.
- Not pleased or happy with something.