The most common and most likely answer to this crossword clue is the 8 letter word DERELICT
I've seen this crossword clue in Independent
D
E
R
E
L
I
C
T
More clues leading to the result DERELICT
- Abandoned European souvenir in outskirts of Detroit
- Credit arranged to protect the Spanish down and out
- Abandoned the German extract Gaff’s forgotten
- Neglected food shop keeps on casual types primarily
- Case of rogue breaking into shop’s brought to court and abandoned
- Daughter found shelters left by one down-and-out
- Neglected old widow on the outskirts of Dundee
- Abandoned deceit, cunningly taking in both sides separately
- Abandoned British quitting obligation to protect memorial
- Abandoned ride with Celt insurgent
Buddy explains!

The straight part
We know that "Neglected" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case neglected = derelict.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 DERELICT mean?
DERELICT noun- Property abandoned by its former owner, especially a ship abandoned at sea.
- An abandoned or forsaken person; an outcast.
- A homeless and/or jobless person; a person who is (perceived as) negligent in their personal affairs and hygiene. (This sense is a modern development of the preceding sense.)
- Abandoned, forsaken; given up by the natural owner or guardian; (of a ship) abandoned at sea, dilapidated, neglected; (of a spacecraft) abandoned in outer space.
- Negligent in performing a duty.
- Lost; adrift; hence, wanting; careless; neglectful; unfaithful.