slam dunk noun
plural ∼ dunks [count] 1 basketball : 2dunk 2 US, informal : something that is sure to happen or be successful
▪ The vote proved to be a slam dunk for our side with a 24 to 5 win. ▪ There's no doubt that he's guilty. The case is a slam dunk.
▪ The vote proved to be a slam dunk for our side with a 24 to 5 win. ▪ There's no doubt that he's guilty. The case is a slam dunk.
