refuse to talk or stop talking; fall silent; "The children shut up when their father approached"
to keep mum
Turkish pronunciation
tı kip mʌm
Pronunciation
/tə ˈkēp ˈməm/ /tə ˈkiːp ˈmʌm/
Etymology
[ t&, tu, 'tü ] (preposition.) before 12th century. Middle English, from Old English tO; akin to Old High German zuo to, Latin donec as long as, until.