1. abandoned and in poor condition; neglected
2. failing in or neglectful of a duty or obligation
Usage: formal

1. a person without a home, job, or property; a vagrant
2. something, especially a ship, that has been abandoned
Usage: often nautical

Examples

• The derelict building had broken windows and overgrown weeds.
• She felt derelict in her duties as team captain.
• The old factory sat derelict for years before being demolished.
• The police found a derelict sleeping in the park.
• Coast Guard crews searched for the derelict ship drifting at sea.
• The derelict warehouse became a haven for stray cats.
• He was derelict in paying his bills on time.