run-down

Use the adjective run-down to describe something that's so old it's falling apart, like a beat up old car or a worn out mattress with springs sticking out of it.

A dingy neighborhood that's seen better days can be called run-down, and so can your decrepit apartment building, with its broken elevator, creaky stairs, and windows that don't close all the way. A person can also be run-down, if he is bent and elderly, or just exhausted from traveling for days or working too many late nights. You can also spell it rundown, although the hyphenated run-down is more common.

Definitions of run-down
  1. adjective
    worn and broken down by hard use
    “a run-down neighborhood”
    synonyms: creaky, decrepit, derelict, flea-bitten, woebegone
    worn
    affected by wear; damaged by long use
  2. adjective
    having the spring unwound
    “a run-down watch”
    Synonyms:
    malfunctioning, nonfunctional
    not performing or able to perform its regular function
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