to be anyone's guess
01
to be difficult or almost impossible to predict the outcome of a situation or event
![to [be] (anyone's|anybody's) (guess|call) definition and meaning](https://cdn.langeek.co/photo/44428/original/?type=jpeg "to [be] (anyone's|anybody's) (guess|call) definition and meaning")
Idiom
Informal
例子
The number of attendees at the event is anyone's guess; we'll just have to wait and see.
to be difficult or almost impossible to predict the outcome of a situation or event
IdiomInformal
