derelict
1. [ noun ] a person unable to support himself
Related terms: pauper
2. [ adjective ] failing in what duty requires
Synonyms: neglectful remiss delinquent
Examples:

"derelict (or delinquent) in his duty" "neglectful of his duties" "remiss of you not to pay your bills"

Related terms: negligent
3. [ adjective ] deserted or abandoned as by an owner
Examples:

"a derelict ship"

Related terms: forsaken
4. [ noun ] (nautical,transportation) a ship abandoned on the high seas
Synonyms: abandoned_ship
Related terms: ship
Similar spelling:   dereliction