hush-hush

There was a lot of hush-hush around the surprise party, so we pretended not to know.

用法提示：hush-hush 在此作名词，指‘秘密’。

The team planned the new product launch in total hush-hush to keep competitors guessing.

用法提示：hush-hush 作名词，表示‘保密状态’。

After months of hush-hush, the school finally announced the date of the talent show.

用法提示：hush-hush 在此为名词，意为‘秘密行动’或‘保密状态’。