restore
The painting has remained unrestored and in storage since the Revolution.
This is a rare example of an unrestored original homestead.
There is also the chance to see down into the unrestored courtyards of mansions not yet converted into hotels.
If you walk far enough west, you come upon unrestored sections of the wall at the edge of the Gobi Desert.

SMART Vocabulary: related words and phrases

In bad condition
battered
battle-scarred
be on the skidsidiom
beat someone up
blasted
have seen better daysidiom
hors de combat
impaired
in decay
in good, bad, etc. repairidiom
ruined
run someone/something down
sad
scarred
scuffed
the worse for wearidiom
well worn
worm-eaten
worn out
worse