01 With a restrained voice or moderate force; in an undertone.
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1.
With a restrained voice or moderate force; in an undertone.(Mus.)
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2.
Spoken low or in an undertone.
Entry
2 senses
Webster, 1913
Sotto voce
· Sot·to vo·ce
· IPA /ˌsɑtoʊ ˈvoʊtʃi/