stum

To not talk. To "stay stum".
As far as I can tell it derives from 19th century England/Australia, as read in Bryce Courtenay's 'The Potato Factory'

Hey thanks for staying stum about my involvement in that bank heist..

stum by Claire Robinson May 26, 2008

Stum

To be both dumb, and stupid. Many people who are stum are also mentally defficient.

Liam is incredibly stum.

Stum by Massive Peeper Man June 12, 2020

STUM

STUM meaning stupid and dumb.

Some things they do are so STUM.

STUM by Toliz June 24, 2020

stum

poo flick

i will stum you if you dont be careful!

stum by Snaffalafigus January 8, 2012

Stum

A combination of stupid and dumb

If you think 2+1 is 4 you might be stum

Stum by I’m hungry where’s the fish May 19, 2019

stum

Someone that hangs out in Starbucks all the time like they haven't got a regular home. A 'Starbuck's bum'.

Man, I wish that stum would stop hogging the power socket by the wall over there!

stum by Ray Price September 10, 2005

stum

When someone makes no sense and they are not dumb they stum. (basically a Neck in a word form)

Friend: *walking in the middle of the street

ME: get on the road .

Other friend: That was stum. Are u serious, get on the road?

stum by The anonymous Dutchess April 23, 2016