noun
geezer
GEE-zer/ˈɡiːzər/
An old man, especially one seen as eccentric or cranky.
The cheerful old geezer sits proudly with his cap and walking stick.

Etymology
Geezer is traced to guiser, a masked or costumed performer. If that derivation is correct, the sense moved from someone in disguise to an “odd man,” then an “old man.”
In context
SHE BLURTS OUT THAT HE IS AN OLD GEEZER, AND FROM THAT POINT ON, OH DOK-SEO STARTS CALLING EMIT OLD MAN.
More examples
- Grandpa calls himself an old geezer, but he still hikes.
- A few geezers gather at the diner every morning.
- Don't call him a geezer; he's earned a little respect.
Forms
geezer · geezers
Similar words
- codger
- Similarly informal, often emphasizing an old man's eccentric habits.
- old-timer
- Emphasizes age or long experience, not necessarily crankiness.