Continuing at full strength (8)
I believe the answer is:
unabated
'continuing at full strength' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for unabated that I've seen before include "Not calmed or diminished, say storm" , "as strong as ever" , "Undiminished" , "without loss of power" , "Without diminution" .)