old and in poor condition
decrepit - frail
The word ‘decrepit’ can be used to refer to a person or thing that is impaired or broken down by use, poor maintenance, or age. It is often used in relation to buildings, but when it is directed at a person, it is considered highly insulting and disrespectful.
John said that the job interview went badly because the interviewer treated him like a decrepit old man rather than a serious candidate.
My report was designed to highlight the decrepitude of the current system, and how modernizing it could increase profits and productivity.
As part of the regeneration scheme for the area, a number of decrepit old buildings are going to be bulldozed and replaced with more modern structures.