under one's breath

True enough, Picard thought, ignoring the faint bass rumble- the Klingon equivalent of mumbling under one's breath- that came from behind him.

With four singers, a pianist, a set and lighting, the first of these on Thursday was an elaborate affair, though one kept asking under one's breath whether music this good needed that much elaboration.

No one having explained opera, or what it was to sing other than the singing that was done in a careless way, under one's breath, while carrying wood into the house or water up from the well.

After discovering that faster readers were also more effective readers, she began developing her programs, ultimately developing a methodology of using a finger or pointer to trace lines of text while eliminating sub-vocalizing (reading under one's breath or aloud in one's head).