under one's breath

Softly, in an undertone or whisper, as in "I can't stand one more minute of that music," she muttered under her breath. This idiom, first recorded in 1832, is probably a hyperbole, alluding to a sound that is softer than breathing.

Common Names:

Name	Pronounced	Usage
Issa	-	Arabic
Joachim	zho-a-KEEM (French), YO-ah-khim (German), yo-AH-khim (German), yaw-AH-kheem (Polish), JO-ə-kim (English)	French, German, Polish, Judeo-Christian Legend
Raschelle	rə-SHEL	English (Rare)
Faustina	[fɔ:'sti:nə]
Bassett	['bæsit]
Ethel	['eθəl]