hush-hush

Adjective

Secret, not spoken of (or spoken of only in hushed whispers between insiders).

Japanese Meaning

非常に秘密な、内密な、またはごく内輪だけで語られるような状態の状態を指す。 / 公にされることなく、ひそかに扱われること。

The hush-hush meeting in the basement lasted only fifteen minutes before everyone slipped back to their desks.

地下の極秘の会議はわずか15分で終わり、参加者たちはそれぞれ自分の机に戻っていった。

Sense（1）

Secret, not spoken of (or spoken of only in hushed whispers between insiders).

The spy program was very hush-hush: no-one ever spoke of it.

more hush-hush

（ comparative ）

most hush-hush

（ superlative ）