I heard then a sigh next to me that had an undertone not unlike a snarl.
The undertone riffs off the “un-American” implications of the 2008 campaign directed at then-Sen.
Two students appeared, gave their names to Fancher in an undertone, and sauntered out the back door of the building.
A chattering and hurrying of people could be heard as an undertone.
The faces, too, of most we meet are serious, and their voices in an undertone.
They had been speaking in an undertone, standing together at a window, apart from the rest.
She seemed very proud and pleased and happy, though she spoke in an undertone, for Jane was within earshot.
"I will go with you quietly," he said to them, in an undertone.
“Officers of the law, I should guess,” Salt replied in an undertone.
Then, knowing Nani's history, he related it in an undertone.