Still good, old woman's figure outwardly (8)
I believe the answer is:
stagnant
'still' is the definition.
(synonyms)
'good old woman's figure outwardly' is the wordplay.
'good' becomes 'g' (abbreviation).
'old woman' becomes 'nan' (informal term for a grandmother).
'figure' becomes 'stat' (statistic).
'outwardly' means one lot of letters goes inside another.
'g'+'nan'='gnan'
'gnan' put within 'stat' is 'STAGNANT'.
(Other definitions for stagnant that I've seen before include "Having no current or flow" , "unmoved" , "Not circulating or flowing" , "Motionless deer" , "Foul from inertia" .)