Crooked leaders always kiss infants months before outcome (6)
I believe the answer is:
akimbo
'crooked' is the definition.
(similar in meaning)
'leaders always kiss infants months before outcome' is the wordplay.
'leaders' indicates taking the first letters.
The first letters of 'always kiss infants months before outcome' is 'AKIMBO'.
(Other definitions for akimbo that I've seen before include "Way of standing" , "Stance with hands on hips" , "Hands-on-hips" , "Bent outwards (as limbs)" , "With hands on hips and elbows extending outward" .)