The most common and most likely answer to this crossword clue is the 11 letter word FRUSTRATION
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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 FRUSTRATION mean?
FRUSTRATION noun- The feeling of annoyance when one's actions are criticized or hindered
- The act of frustrating, or the state, or an instance of being frustrated
- A thing that frustrates
- Anger not directed at anything or anyone in particular