hush-hush
adjective informal uk/ˌhʌʃˈhʌʃ/ us/ˌhʌʃˈhʌʃ/
秘密的
kept secret from people
In the end he was forced to resign but it was all very hush-hush. 最后他被迫辞职，但这些全是秘密发生的。
Synonyms: clandestine cloak-and-daggersecret surreptitiousundercover underground