I believe I may be an empath (although I could be just overly sensitive). But the way I wwould describe it simply is for example: you walk into a room amd "Charlie" is in a bad mood everyone around "charlie" knows his mood so they feel his bad mood rubbing off on them. Thats just regular nature of people. But for me its more like walking into a room and not knowing a single person (or what mood theyre in) and feeling overwhelmed not by the amount of people but the amount of varying emotions. If Im around someone I know well I can tell instantly that something good or bad has happened eventho havent said a word or displayed any signs... Also 99% of the time I know a persons intentions without having to get to know them. Like I will be introduced and as we shake hands I will know I want nothing to do with this person. Ive been called many times and told "ya know you were right about so and so,how did you know". And I say its just a feeling..
Now I could be 100% wrong in believing these things make me an empath. I may very well just be highly intuitive, I am always open to being corrected. However this is how Ive understood an empath to be.