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

Typically a slam dunk, country acts weren’t as reliable of a draw as usual. — Ross Raihala, Twin Cities, 8 Sep. 2026

One of the more popular myths accepted as fact is that the WNBA has bricked the breakaway slam dunk that is Caitlin Clark phenomenon. — Fort Worth Star-Telegram, 21 Aug. 2026

The New York Knicks hold the NBA record for most times that a player has won the slam dunk contest while wearing the Knickerbocker uniform. — Tom Rende, Forbes.com, 7 Aug. 2026

In addition to an overtime 3-pointer, Wheeler’s performance was also highlighted by a running slam dunk in the fourth. — Jason Beede, The Orlando Sentinel, 13 July 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