no permitas que

don't let

→ no
phrase Rare #36,539
don't let Used to tell someone not to allow something to happen. It is usually followed by a clause with a verb in the subjunctive.
SP: No permitas que te traten mal.
EN: Don't let them treat you badly.

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.

No permitas que te vea.

Don't let him see you.

— Una historia china de fantasmas (1987)

No permitas que lo haga solo.

Don't let him do it alone.

Por favor, Dios mío, no permitas que su hijo sea un jorobado.

Please, my God, do not let your son be a hunchback.

— La venganza de Manon (1986)