[take] a guess
1
to make a rough estimate or prediction, especially when one does not have complete or precise information
- Take a guess at how old I am.
- I'll take a wild guess that the movie starts at 7 p.m.
- I'm not sure what the answer is, but I'll take a guess.
- She took a guess about the price of the antique, even though she wasn't certain.
- Can you take a guess at what's in the box?