turn your nose up
US /tɜrn jʊər noʊz ʌp/
UK /tɜrn jʊər noʊz ʌp/

1.
hacer ascos a, despreciar
to refuse to accept something because you feel that it is not good enough for you
:
•
She always turns her nose up at fast food.
Ella siempre le hace ascos a la comida rápida.
•
Don't turn your nose up at a good opportunity.
No le hagas ascos a una buena oportunidad.