Unsanitary (adjective)

1. Not clean or hygienic.
2. Contaminating or dirty.

Origin:

From the latin word 'insanitas' meaning 'lack of health or cleanliness'.

Examples:

1. The kitchen was unsanitary and cluttered, with dirty dishes and food debris everywhere.
2. The bathroom was unsanitary and had a bad odor.
3. The water was unsanitary and not safe for drinking.
4. The conditions in the factory were unsanitary and hazardous to the workers.
5. The streets were unsanitary and littered with trash and garbage.