slam dunk

noun

1

: dunk shot

2

: sure thing

the case is a slam dunk

slam-dunk

ˈslam-ˈdəŋk 

verb

Synonyms of slam dunk

• lock
• sure thing
• lead-pipe cinch
• certainty

Examples of slam dunk in a Sentence

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.

Recent Examples on the Web

Cain scored eight in the first quarter by sinking two late 3-pointers and adding a two-handed slam dunk with less than a minute left in the opening frame. — Jason Beede, The Orlando Sentinel, 8 Nov. 2026

Unlike Fox’s signature play Wednesday, the Spurs’ new starting lineup is not yet a slam dunk. — Jeff McDonald, San Antonio Express-News, 15 Oct. 2026

As the camera focused on a star player making a touchdown or a slam dunk, the faces of the fans behind them would coalesce into a colorful, murky abstraction. — Ryan Sullivan, Artforum, 1 Oct. 2026

Through a historic bull market, passive investing has long been a slam dunk, even as underlying changes sow uncertainty about the future. — Allie Garfinkle, Fortune, 28 Sep. 2026

Word History

First Known Use

1968, in the meaning defined at sense 1

Rhymes for slam dunk

• debunk
• bunk
• chunk
• clunk
• drunk
• hunk
• junk
• punk
• shrunk
• slunk
• spunk
• sunk

Kids Definition

slam dunk

noun

: dunk shot

slam-dunk

ˈslam-ˈdəŋk

verb