1
Soiled or likely to soil with dirt or grime.
Antonyms: clean

2
Contaminated with infecting organisms.

3
(Of a manuscript) defaced with changes.

4
Obtained illegally or by improper means.

5
Violating accepted standards or rules.

6
Unethical or dishonest.

7
Make soiled, filthy, or dirty.
Antonyms: clean

8
To make filthy.

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