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n. the state, condition, or practice of being unsanitary

n. a state that is not conducive to health

"The fact of its disappearance is both significant and interesting, in that it was unquestionably due to the ranker and viler forms of both municipal and individual filthiness and unsanitariness, which even our moderate progress in civilization has now abolished."

sanitary condition   

filth    nastiness    foulness    filthiness    dunghill