stoop to - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Condescend to something beneath one's dignity, as in She wouldn't stoop to listening to that obnoxious gossip. [Second half of 1500s]