too big for your britches

US /tuː bɪɡ fɔːr jʊər ˈbrɪtʃɪz/
UK /tuː bɪɡ fɔːr jʊər ˈbrɪtʃɪz/
"too big for your britches" picture
1.

أكبر من حجمه, متغطرس, مغرور

acting in a way that shows you think you are more important or capable than you really are; arrogant or conceited

:
Ever since he got that promotion, he's been acting too big for his britches.
منذ أن حصل على تلك الترقية، وهو يتصرف وكأنه أكبر من حجمه.
Don't get too big for your britches just because you won one game.
لا تتصرف وكأنك أكبر من حجمك لمجرد أنك فزت بلعبة واحدة.