/ ˈderəlɪkt; NAmE / adjective , noun
■ adjective
( especially of land or buildings ) not used or cared for and in bad condition :
derelict land / buildings / sites
■ noun
( formal ) a person without a home, a job or property :
derelicts living on the streets
SYN vagrant
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WORD ORIGIN
mid 17th cent.: from Latin derelictus abandoned, past participle of derelinquere , from de- completely + relinquere forsake.