Definition of sotto voce adverb from the Oxford Advanced American Dictionary

 

sotto voce

 adverb
adverb
NAmE//ˌsɑt̮oʊ ˈvoʊtʃi//
 
(from Italian)(formal)
 
jump to other results
in a quiet voice so that not everyone can hear “You'll be sorry,” he muttered sotto voce.
sotto voceadjective
 
jump to other results
a sotto voce remark