Others were walking slowly to and fro, and conversing in undertones.
They spoke in undertones and threw pitying glances at the bride.
The President and Admiral Clay consulted for a moment in undertones.
The conversation, carried on in undertones, was of matters of the gravest import.
Voices of dissent were raised in undertones around the table.
The old men debated among themselves and mumbled in undertones.
For instance, at Grammar School, one no longer speaks of boys in undertones.
We spoke in undertones, so that our voices might not reach our pursuers.
They talked in undertones, laughing a little at some droll observation or reminiscence.
The crowd did not seem pleased at my coming, and criticized me in undertones.