The most common and most likely answer to this crossword clue is the 9 letter word CELIBATES
I've seen this crossword clue in Independent
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More clues leading to the result CELIBATES
Buddy explains!
The straight part
We know that "We won’t have it!" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case we won’t have it! = celibates.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 CELIBATES mean?
CELIBATES noun- One who is not married, especially one who has taken a religious vow not to get married, usually because of being a member of a religious community.
- A celibate state; celibacy.