Prepares to propose, perhaps (6)
I believe the answer is:
kneels
'prepares to propose perhaps' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for kneels that I've seen before include "Adopts customary position for prayer" , "Adopts normal posture for prayer" , "Shows deference" , "Genuflects" , "Awaits blessing" .)