Meaning of “wonder” - Learner’s Dictionary

wonder

verb uk us /ˈwʌndər/

B1 [ I, T ] to want to know something or to try to understand the reason for something:

[ + question word ] I wonder what he's making for dinner.
I wonder why she left so suddenly.
I/we wonder if/whether ...

B1 used to politely ask someone for something or to suggest something:

I wonder if you could help me?
We were wondering if you'd like to come over for a meal sometime.

(Definition of “wonder verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)