stum [st?m]

keep stum

To remain silent; to not say anything; to avoid revealing secret or sensitive information. An alternative spelling of the more common "keep schtum/shtum." It's better to just keep stum when the boss starts flinging accusations than risk further incensing him. We'll need to keep stum about this deal for the time being.
See also: keep, stum
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

stum [st?m]

verb
See also: stum
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
See also: