dirtying (part of speech: verb)
- And after polluting the Rostra with blood and dead bodies, they separated, leaving the city to anarchy, like a ship carried along without a pilot, so that sensible men were well content if matters should result in nothing worse than a monarchy after such madness and such tempest. - "Plutarch's Lives Volume III.", Plutarch.
- At the horror of his polluting touch all my nature seemed transformed. - "Cord and Creese", James de Mille.
- Indeed, Pattison speaks of literary ambition as being for the student not an amiable weakness, but a defiling and polluting sin. - "The Upton Letters", Arthur Christopher Benson.