trail off

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

s'éteindre, s'estomper

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.
Sa voix s'éteignit alors qu'il réalisait son erreur.
The conversation trailed off into silence.
La conversation s'éteignit dans le silence.