The most common and most likely answer to this crossword clue is the 10 letter word ENCHANTING
I've seen this crossword clue in Financial Times
E
N
C
H
A
N
T
I
N
G
More clues leading to the result ENCHANTING
- Wench wanting to repeatedly lose weight to become delightful
- Lovely intonation in engine, mostly reconditioned
- Delightful singing by chaps heading off
- Working, for a spell?
- Usage of an etching needle, basically fascinating
- English number; singing is lovely
- Winsome wench ranting after introductions
- Fancy quietly going home at end of evening? Lovely!
- Delightful spelling
Buddy explains!

The straight part
We know that "Lovely" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lovely = enchanting.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 ENCHANTING mean?
ENCHANTING verb- To attract and delight, to charm.
- To cast a spell upon (often one that attracts or charms).
- To magically enhance or degrade an item.
- An act of enchantment.
- Having the ability to enchant; charming, delightful.