Showing little activity (8)
I believe the answer is:
stagnant
'showing little activity' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for stagnant that I've seen before include "Motionless deer" , "Stale - motionless" , "Moribund" , "Sluggish" , "(Of water) motionless" .)