keep schtum

(redirected from schtoom)
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keep schtum

To remain silent; to not say anything. (Used especially when by saying something, especially at the wrong time, one would cause trouble or difficulty for him- or herself.) Primarily heard in UK. It's better to just keep schtum when the boss starts flinging accusations than risk further incensing him.
See also: keep
References in periodicals archive ?
Even after messageboards began detailing new features of the Clie PEG-N770C, Sony kept schtoom - no doubt delighted by the free PR it generated.
Now it's time she was rewarded for keeping schtoom all these years.