Как по Английски будет 不确定

adjective

Not able to be relied on; not known or definite.

Примеры использования:

An uncertain future

adverb

With a lack of confidence or certainty.

Примеры использования:

He thought for a moment before nodding uncertainly

noun

The state of being uncertain.

Примеры использования:

Times of uncertainty and danger

adjective

Not solid or secure.

Примеры использования:

Unfirm ground

adjective

Not feeling, showing, or done with confidence and certainty.

Примеры использования:

I stand quietly under that glare, unsure of how to reply to such a statement