Expressions of Certainty and Uncertainty

I'm sure.

A2

I am certain.

I'm certain.

A2

I am confident.

Definitely.

A2

Without a doubt.

Absolutely.

A2

Completely; without question.

For sure.

A2

Certainly.

I think so.

A2

I believe it's likely.

I believe so.

A2

I have reason to think it's true.

I guess so.

A2

I suppose it's possible.

Probably.

A2

Likely.

Maybe.

A2

Possibly.

Perhaps.

A2

Possibly.

I'm not sure.

A2

I am uncertain.

I don't know.

A2

I lack knowledge about this.

I doubt it.

A2

I think it's unlikely.

It's unlikely.

A2

It's improbable.

I'm not certain.

A2

I'm not completely sure.

It's possible.

A2

It could happen.

I suppose so.

A2

I think so, although I'm not completely sure.

I'm not convinced.

A2

I'm not persuaded.

It's a bit uncertain.

A2

The situation is somewhat unclear.

I'm absolutely sure.

B1

I have no doubt.

There's no doubt about it.

B1

It's certain.

I'm certain.

B1

I'm confident.

It's highly likely.

B1

It's very probable.

It's possible.

B1

It could happen.

It's unlikely.

B1

It probably won't happen.

I doubt it.

B1

I think it's improbable.

I'm not so sure.

B1

I'm hesitant.

I'm not convinced.

B1

I'm not persuaded.

Perhaps.

B1

Maybe.

B1

Possibly.

It's a possibility.

B1

It could happen.

I think so.

B1

I believe it's true.

I don't think so.

B1

I believe it's not true.

I believe so.

B1

I have reason to think it's true.

I reckon.

B1

I think.