show off
show off
(informal, disapproving) to try to impress others by talking about your abilities, possessions, etc.
He's just showing off because that girl he likes is here.
show somebody/something ⇔ off
to show people somebody/something that you are proud of
We were keen to show off our new car.
show off how, what, etc… He likes to show off how well he speaks French.
show something ⇔ off
(of clothing) to make somebody look attractive, by showing their best features
a dress that shows off her figure
e.g.