Part of speech:
A person who stands near but does not participate; mere onlooker
One who snoops
Find another word for fly-on-the-wall. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for fly-on-the-wall, like: bird-s-eye-view, bystander, listener-in, little pitcher with big ears, snoop and worm-s-eye-view.