Prepare for starvation regularly (5)
I believe the answer is:
train
'prepare' is the definition.
('train' can be a synonym of 'prepare')
'starvation regularly' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
The alternating letters of 'starvation' are 'TRAIN'.
'for' is the link.
(Other definitions for train that I've seen before include "Point" , "Teach; followers" , "Coach - string of coaches" , "Prepare for public transport?" , "Trailing material on dress" .)