Dictionary.com
definitions
  • synonyms

Idioms and Phrases with fly on the wall

fly on the wall

An unseen observer or listener, as in I wish I could be a fly on the wall when she tells him she's pregnant. [Mid-1900s]

Show More
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

Examples from the Web for fly on the wall

Contemporary Examples

Historical Examples