In professional settings, “I am not sure” is perfectly acceptable, but you can be more precise about what you know, what needs checking, and when you can provide an answer. Strong alternatives include “I’ll need to confirm that,” “I don’t have that information yet,” and “My understanding is…”.
Express Uncertainty Without Sounding Unprepared
- I’ll need to confirm that
- I don’t have that information yet
- Let me check and get back to you
- My understanding is…
- As far as I know…
- I can’t say for certain
- I’m not able to confirm that yet
- I’d rather verify that before answering
- I’m still looking into that
- I don’t want to speculate
- That hasn’t been decided yet
- There are still a few unknowns
- I’m not completely certain, but…
I’ll need to confirm that
Shows that you do not want to guess and that you intend to verify the answer.
Example: I’ll need to confirm that with finance before I give you a figure.
I don’t have that information yet
Direct and professional when the information is genuinely unavailable to you.
Example: I don’t have that information yet, but I expect an update this afternoon.
Let me check and get back to you
Pairs uncertainty with a clear next step.
Example: Let me check and get back to you before the end of the day.
My understanding is…
Useful when you have a reasonable interpretation but want to leave room for correction.
Example: My understanding is that the policy applies from 1 October.
As far as I know…
Signals that your answer is based on current knowledge rather than certainty.
Example: As far as I know, no further changes have been approved.
I can’t say for certain
Straightforward wording for an answer that cannot yet be guaranteed.
Example: I can’t say for certain until the final numbers are available.
I’m not able to confirm that yet
More formal and especially suitable when confirmation depends on another person or process.
Example: I’m not able to confirm that yet because the application is still under review.
I’d rather verify that before answering
Shows care and accuracy instead of guessing.
Example: I’d rather verify that before answering, as the guidance changed recently.
I’m still looking into that
Useful when the issue is actively being investigated.
Example: I’m still looking into that and will share what I find.
I don’t want to speculate
Appropriate when guessing could be misleading or unhelpful.
Example: I don’t want to speculate about the outcome before the panel meets.
That hasn’t been decided yet
Clarifies that the uncertainty belongs to the situation, not to your knowledge.
Example: That hasn’t been decided yet; the team will review it on Monday.
There are still a few unknowns
Useful when several variables prevent a firm answer.
Example: There are still a few unknowns, so the timeline may change.
I’m not completely certain, but…
Keeps the natural phrasing while allowing you to share a tentative answer.
Example: I’m not completely certain, but I believe the form is due on Friday.
Add What Happens Next
Professional uncertainty is usually easier to accept when you explain the next step. If you can check the information, say when or how you will do so rather than filling the gap with a guess.
Avoid replacing “I’m not sure” with vague corporate language. Clear uncertainty is more credible than sounding certain when you are not.