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..

by Claire Robinson May 26, 2008

i will stum you if you dont be careful!

by Snaffalafigus January 8, 2012

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!

by Ray Price August 26, 2005

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

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

Liam is incredibly stum.

Some things they do are so STUM.

by Toliz June 24, 2020

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