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
Lucilla	-	Italian, Ancient Roman
Abel	AY-bəl (English), ah-BEL (Spanish), ə-BEL (Portuguese)	English, French, Spanish, Portuguese, Georgian, Biblical, Biblical Latin, Biblical Greek
Hepsie	HEP-see	English (Rare)
Nora	NAWR-ə (English), NO-rah (German)	Irish, English, Swedish, Norwegian, Danish, German, Dutch, Italian
Zinnia	ZIN-ee-ə	English (Rare)
Stacy	STAY-see	English