trail off

US /treɪl ɔf/
UK /treɪl ɔf/
"trail off" picture
1.

spegnersi, affievolirsi

If a speaker or their voice trails off, they stop speaking or the sound of their voice becomes weaker and weaker and then stops.

:
His voice trailed off as he realized his mistake.
La sua voce si spense mentre realizzava il suo errore.
The conversation trailed off into silence.
La conversazione si spense nel silenzio.