adjective. (especially of promises or contracts) having been violated or disregarded.
Sentences with unkept
1. Preposition or subordinating conjunction
Eventually, too many phosphates not only make your tank look unkept but also cause destruction of your living creatures.
2. Noun, singular or mass
If you fail to replace the siding on your house, you run the risk of your home's exterior appearing unkept.
Cracking and peeling paint make a house look old and unkept.