Poised (8)
I believe the answer is:
balanced
'poised' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for balanced that I've seen before include "Stable - poised" , "Having different elements in the correct proportions, in a diet say" , "Poised, held in equilibrium" , "Even" , "Composed - unbiased" .)