slam dunk

US /ˈslæm dʌŋk/
UK /ˈslæm dʌŋk/
"slam dunk" picture
1.

a shot in basketball where a player jumps high and forces the ball down through the basket with one or both hands

:
He finished the game with a powerful slam dunk.
The crowd cheered loudly after the impressive slam dunk.
2.

something that is easily achieved or guaranteed to succeed

:
Winning this contract will be a slam dunk for our company.
With his experience, getting that job is a slam dunk.
1.

to achieve something easily or with guaranteed success

:
He's going to slam dunk that presentation.
We need to slam dunk this project to impress the client.