from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Alternative form of shtum.
Sorry, no etymologies found.
His family's rule for life was "stay shtoom" -- don't draw attention to yourself.
Anyway I wasn't getting involved with Old Bill so I kept shtoom.
He's just kept shtoom about the whole thing ever since, no doubt having had a mobile phone thrown at his head by the prime minister.
Dark Knight director has kept shtoom about his upcoming projects.