It is just basically a short term of the word what do you mean.
There's also many other words that we can also use it shortly. These words we can also use them when messaging each other instead of just tying the whole sentence which is very long and not cool looking.

More words:
ROFL means Rolling on floor laughing.
STFU means Shut the *freak* up.
LMK means Let me know.
ILY means I love you.
YOLO means You only live once.
SMH means Shaking my head.
LMFAO means Laughing my freaking *a* off.
NVM means Never mind.

Thot: I want u daddy
me: wdym??

WDYM by III Tempered May 17, 2020

Get merch

Wdym

Abbr. for What do you mean?

You said that you were going to be going to a place without me,but earlier you said that you were going to take me,Wdym?

Wdym by Itsyagurljess September 3, 2020

Get merch

Wdym

Wdym

An abbreviation meaning , what do you mean

I don't know how it's gonna go
Wdym?

Wdym by Anonymous.s.s February 17, 2018

Get merch

Wdym

What do you mean is a way to ask someone to specify what they have said in the text message

I don’t understand wdym?

Wdym by Nicole Katzmann July 30, 2018

Get merch