Thus repeatedly average (2-2)
I believe the answer is:
so-so
But I can't explain it at all! Could you help me understand?
(Other definitions for so-so that I've seen before include "OK, but nothing special" , "'Passable, middling (2-2)'" , "Mediocre" , "Informally, only moderately good or well" , "Neither good nor bad" .)