don't let
No permitas que se vaya sin antes firmar el documento que le preparamos esta mañana.
Don't let him leave without first signing the document we prepared for him this morning.
No permitas que la situación esté fuera de control por no haber actuado a tiempo.
Don't let the situation get out of control because you didn't act in time.
No permitas que nadie te diga lo contrario.
Don't let anyone tell you otherwise.
No permitas que Maria haga lo que quiera.
Don't let Maria do whatever she wants.
Don't let him do it alone.