Idioms and Phrases with treat like dirt
treat like dirt
Behave badly or show contempt toward, as in Her boss treats all the secretaries like dirt. This idiom uses dirt in the sense of “something worthless,” a usage dating from the mid-1300s.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.