look down your nose at
US /lʊk daʊn jʊər noʊz æt/
UK /lʊk daʊn jʊər noʊz æt/
1.
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.
•
Don't look down your nose at simple jobs; they are often very important.