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

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

The Phillies’ slam dunk of a playoff spot morphed into something much more tenuous. — ABC News, 27 Sep. 2026

There are many factors that should make taking Congress back a slam dunk. — Laura Washington, Chicago Tribune, 23 Sep. 2026

South Campus Rail Trail For those of you wanting a real hike without ever leaving the friendly confines of Oxford, this one is an absolute slam dunk. — Austin Perry Outkick, FOXNews.com, 17 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