Meaning of “unclear” - Learner’s Dictionary

unclear

adjective uk us /ʌnˈklɪər/
DIFFICULT TO UNDERSTAND

B2 not easy to understand:

The situation at the moment is unclear.
[ + question word ] It's unclear what actually happened that night.
NOT SURE

B2 If you are unclear about something, you do not understand it exactly:

I'm unclear about exactly who's doing what.

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