A2
used to mean that something is very likely
Dictionary examples:
My phone will probably die during an important call. (0.0)
My dog will probably eat my homework again. (0.0)
I'll probably spill coffee on my shirt today. (0.0)
Probably the best thing to do is to call them before you go. (17.2)
He probably didn't even notice. (17.5)
I'll probably be home by midnight. (29.4)
I'm probably going - it depends on the weather. (30.1)