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'
As far as I can tell it derives from 19th century England/Australia, as read in Bryce Courtenay's 'The Potato Factory'
by Claire Robinson May 26, 2008

Liam is incredibly stum.
by Massive Peeper Man June 12, 2020

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

Someone that hangs out in Starbucks all the time like they haven't got a regular home. A 'Starbuck's bum'.
by Ray Price September 10, 2005

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?
ME: get on the road .
Other friend: That was stum. Are u serious, get on the road?
by The anonymous Dutchess April 23, 2016
