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Phrase(s): turn one’s nose up at someone or something
1. Lit. to raise one’s head and therefore one’s nose slightly as a sign of rejection. • I never turn my nose up at food. • I never turn up my nose at dessert, no matter what it is. 2. Fig. to sneer at someone or something; to reject someone or something. • John turned his nose up at Ann, and that hurt her feelings. • He turned up his nose.
McGrawhill's American Idioms And Phrasal Verbs