Expressions of Certainty and Uncertainty

Absolutely certain; without any doubt.

I'm quite sure, but not completely certain.

It's very probable.

It's probable.

It could happen.

There's a chance it could happen.

It's probably not going to happen.

I don't think so.

I'm uncertain or hesitant.

I'm not convinced.

It's doubtful or uncertain.

I'm not persuaded or certain.

It's highly unlikely to succeed.

It's a risky undertaking with an uncertain outcome.

The outcome is still unknown.

The decision or outcome is still uncertain.

I doubt it will happen.

The outcome is equally likely.

It's almost certain.

Taking everything into account...

It's very likely.

As far as I know...

The outcome is inevitable

Absolutely certain