look down your nose at
US /lʊk daʊn jʊər noʊz æt/
UK /lʊk daʊn jʊər noʊz æt/

1.
mirar por encima del hombro a, despreciar
to think that you are better than someone or something, or to treat someone or something as if you are better than them
:
•
She always looks down her nose at people who didn't go to college.
Ella siempre mira por encima del hombro a la gente que no fue a la universidad.
•
Don't look down your nose at simple jobs; they are often very important.
No mires por encima del hombro a los trabajos sencillos; a menudo son muy importantes.