It is clear that we have those terms for the RWR:
MUD - indicates ground threat displayed with no launchidentification.
NEILS - indication of Air Intercept radar in search.
SPIKE - indication of an Air Intercept threat in track or launch.

Is there Brevity term for the ground thread being in track or launch ?

I've already talked about it with a few members already, we did go through 476TTP3-1.1 document and we concluded that we could not find any term which would be appropriate for such condition and my reasoning is that it is quite the difference between seeing sth on the RWR or this sth locking you up and firing at you.