put on airs

• Вести себя претенциозно, высокомерно или снобистски, часто преувеличивая свою значимость или утонченность.

To behave in a pretentious, superior, or snobbish manner, often by exaggerating one's importance or sophistication.

1. Act superior or pretentiousB2informal

   To behave in a way that suggests one is more important or sophisticated than one really is.

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   • She always puts on airs when she visits her hometown.
   • He puts on airs just because he got a promotion.
   • Don't put on airs with me; I know you're just like everyone else.