Eternally increasing? (8)
I believe the answer is:
evermore
'eternally' is the definition.
(synonyms)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for evermore that I've seen before include "Always and without end" , "Forever (literary)" , "For which, permanently" , "unceasingly" , "Always, forever" .)