mutter under (someone's) breath

Translations
бормотать себе под нос
She muttered under her breath during the meeting.
Она бормотала себе под нос во время встречи.
Definitions
To speak quietly and indistinctly, often in a way that is not intended to be heard by others, typically expressing annoyance or discontent.
Words
mutter

verb
бормотать
under

preposition
под
someone

pronoun
кто-то
s

article or possessive pronoun
чей-то
breath

noun
дыхание