diamond
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
First-rate; excellent.
Register: slang
Where it’s used:
Used
American English
Examples
He's a diamond geezer.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “diamond” mean?
First-rate; excellent.
Is “diamond” formal or informal?
diamond is generally slang.