derelict

"a creaky shack"; "a decrepit bus...its seats held together with friction tape"; "a flea-bitten sofa"; "a run-down neighborhood"; "a woebegone old shack";

"weed-grown yard of an abandoned farmhouse";

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

"a street of bedraggled tenements"; "a broken-down fence"; "a ramshackle old pier"; "a tumble-down shack";