show off
US /ʃoʊ ɑːf/
UK /ʃoʊ ɑːf/

1.
mettere in mostra, ostentare, fare il gradasso
to behave in a way that is intended to attract attention and admiration, and that other people often find annoying
:
•
He's always showing off his new car.
Si sta sempre mettendo in mostra con la sua nuova macchina.
•
She likes to show off her knowledge.
Le piace ostentare la sua conoscenza.