Crossword Genius

Stop developing (8)

Ross

I believe the answer is:

stagnate

(Other definitions for stagnate that I've seen before include "Become inactive (and malodorous)" , "remain motionless" , "Become foul (water)" , "Become still or stale through inactivity" , "resemble pond water?" .)

I've seen this clue in the Universal.
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