The most common and most likely answer to this crossword clue is the 5 letter word CIRCE
I've seen this crossword clue in Independent
C
I
R
C
E
More clues leading to the result CIRCE
- Out of shape is large enchantress
- . Magical female left out of group
- Sorceress left out of magic group?
- Left out of coterie, she’s into 20
- Left out of clique, charming hostess whose guests made pigs of themselves
- Sorceress left out of ring
- Greek enchantress left out of group
- Sorceress left out of loop
- Witchy Woman roughly cut on Eagles’ debut
- Charming lady left out of social group
Buddy explains!

The straight part
We know that "Witchy Woman/Witchy Woman" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case witchy woman/witchy woman = circe.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.