manchar

No quería manchar su expediente con una acusación.

He didn't want to tarnish his record with an accusation.

— Algunos hombres buenos (1992)

El honor del Emperador no se puede manchar.

The Emperor's honor cannot be tarnished.

— El último emperador (1987)

Se va a manchar.

It's going to get stained.

— ¡Que te den profe! (2013)

Ella se ha quitado las botas, para no manchar con sangre la piel.

She has taken off her boots, so as not to stain her skin with blood.

— Sympathy for Lady Vengeance (2005)

Espera, me voy a manchar toda.

Wait, I'm going to get all dirty.

— Crudo (2017)