Encara no tenim significats per a "be an undertone".
1Lord Galloway had edged up to his daughter, and was intimidating her in what he imagined to be an undertone.
2I said to Gatlin in what I hoped was an undertone.
3He spoke lightly, but there was an undertone of anxiety in his voice.
4There was an undertone of angry contempt in the exclamation which made Horace start.
5The people celebrated, but even in their celebration there was an undertone of terror.
6There was an undertone of resentful mortification in her voice.
7There was an undertone of passion in his voice.
8There was an undertone of remembrance in Oram's response.
9There was an undertone of pain in her voice.
10So was an undertone of pleading that I had never... never... heard from Charles Dickens.
11The primary one sounded far away; the second was an undertone, like a sympathetic tanging string.
12She said it lightly enough, but there was an undertone of real disappointment in her voice.
13The individual cracklings of flames were an undertone.
14As a consequence, there is an undertone of insincerity in almost everything which he has written.
15There was an undertone of jealousy in Lady Howel's voice--jealousyexcited not altogether without a motive.
16There was an undertone to the Alpha's voice that drained all the fight out of the kid.