What does chocolate taste like? Sweet? What does sweet taste like?(not trying to sound rude) You know it when you taste it.
I would say that filmic, which is a term I use a lot when talking about video is:
Has A Surreal feel to it, dream like, definitely not in the present, different from real life
Unlike the immediate presence of being "live" whether being live in person or on something like television or video.
Plus the other qualities mentioned above DR, sometimes shallow DOF etc.