Get ready (5)
'get ready' is the definition.
(synonyms)
This is all the clue.
(Other definitions for prepare that I've seen before include "Fit out" , "Make ready or suitable" , "[GET READY] (3 of 3)" , "study" , "Make (something) ready" .)
(Other definitions for ripen that I've seen before include "Get ready to eat" , "Come to maturity like fruit" , "Mature, develop" , "Grow older" , "come near to falling" .)