The most common and most likely answer to this crossword clue is the 9 letter word RANCOROUS
I've seen this crossword clue in The Times
R
A
N
C
O
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S
More clues leading to the result RANCOROUS
- Under Egyptian sun abroad we must drink my bitter
- Represented our scorn about article, becoming spiteful
- Spiteful wartime general striking France, Romania and America
- Controlled by Conservative men fighting, starts to order usual strong bitter
- Organised musical ensemble heard to be resentful
- Brag once mob from pub ask all to strip for bitter
- Bitter scorn — our aunt’s beginning to be horrible
- When cooked American sour corn becomes bitter
- Being bitter or sour can seem awful
- Bitter artist with wit stifling exclamation of surprise
Buddy explains!
The straight part
We know that "bitter" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bitter = rancorous.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 RANCOROUS mean?
RANCOROUS adjective- Full of rancor; bitter; unforgiving.