not a single
Hasta ahora no he perdido ni un solo caso delante de ningún juez.
So far I haven't lost a single case in front of any judge.
— Contratiempo (2017)
Ni un solo pensamiento, ni una chispa de idea.
Not a single thought, not a spark of an idea.
— O Auto da Compadecida (2000)
No lo pienses ni un solo minuto.
Don't think about it for a single minute.
No puedo encontrar ni un solo error en su teoría.
I can't find a single error in his theory.
Nosotros no vimos ni un solo juego.
We didn't see a single game.
Estuve trabajando todo el fin de semana y no pude descansar ni un solo momento.
I was working all weekend and couldn't rest for a single moment.
No hay ni un solo caso de homicidio.
There is not a single case of homicide.
— El hombre sin pasado (2010)
Not a single sparrow could be heard.