secretiveness

uncountable

The state or characteristic of being secretive.

Japanese Meaning

秘密主義 / 隠密性 / 秘密な性質

Her secretiveness made it difficult for friends to know what she was really thinking.

彼女が秘密にしがちな性格のため、友人たちは彼女が本当に何を考えているのか分かりにくかった。

Sense（1）

The state or characteristic of being secretive.