To soil; sully; tarnish.
DIRTINESS.
Unclean; foul; filthy.
Who's the one that started this dirty piece of business? – The Sherrods by George Barr McCutcheon
A chorus of " Sure," " 'Twas a dirty trick," " The kid didn't know no better," and similar cries showed how the sentiment of the crowd lay. – The Boy With the U. S. Foresters by Francis Rolt-Wheeler