- I’m absolutely sure.
- I’m positive that…
- I have no doubt that…
- I’m a hundred percent certain.
- I’m convinced that…
- Chances are that…
(= this will probably happen) - Odds are that…
(= this will probably happen) - I seriously doubt it.
- I don’t think so.
- Probably not.
- It’s not very likely.
- There’s not much chance of that.
- I’d be very surprised if that happened.
- I wouldn’t bet on it.
(= there’s a small chance it could happen… but it probably won’t happen) - That’ll never happen.
