below (one's) breath(redirected from below their breath)
below (one's) breath
Quietly. Often used to describe an aside that one has muttered. What did you just said below your breath? Come on, say it to my face! He's always saying things below his breath, and it gets on my nerves! Why can't he just speak up with some confidence?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.