The most common and most likely answer to this crossword clue is the 8 letter word FISHWIFE
I've seen this crossword clue in The Times
F
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More clues leading to the result FISHWIFE
- Angle we must adopt if ranting woman is seen here
- Harridan’s wish to move into region of Scotland
- Coarse woman, I disclose, bans love in Scots county
- Loudmouthed female union member to use the rod first
- Loudmouth‘s crazy wish to invade Scottish Kingdom
- She swears she could be sole partner
- Mum joins group of women in Scottish town for a nag
- Quiet female group in part of Scotland — not for her?
Buddy explains!

The straight part
We know that "ranting woman" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ranting woman = fishwife.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 FISHWIFE mean?
FISHWIFE noun- A woman who sells or works with fish; a female fishmonger.
- A vulgar, abusive or nagging woman with a loud, unpleasant voice.
- A person, especially a woman, with poor personal hygiene.