(Of water) cease flowing (8)
I believe the answer is:
stagnate
(Other definitions for stagnate that I've seen before include "resemble pond water?" , "decline" , "Stand still and become dull" , "Show little activity" , "Fester" .)
I believe the answer is:
stagnate
(Other definitions for stagnate that I've seen before include "resemble pond water?" , "decline" , "Stand still and become dull" , "Show little activity" , "Fester" .)