Is It Probably or Possibly?

Use "probably" to say that something has a high chance of happening - 50% or greater. Use "possibly" to say that something has a low chance of happening - 50% or less.

What is difference between probably and possibly?

So, if you say possibly, then you're saying that something could be the case, whereas if you're saying probably, you're saying that not only can it be the case but that the chances are higher that it will happen than that it won't.

Is possibly a yes or no?

It might take time to decide if she'd like to meet you. Of course, some people say possibly when they mean yes, and some people say possibly when they mean no. But on balance, it probably reflects indecision.