Go hungry (4)
'go hungry' is the definition.
(to starve is to go without food)
This is all the clue.
(Other definitions for starve that I've seen before include "Go without food" , "Suffer from lack of food" , "Eat nothing" , "Vaster (anag)" , "Suffer extreme hunger" .)
'go hungry' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for fast that I've seen before include "Exercise for spiritual wellbeing" , "Quick - don't eat" , "Rapidly; tight" , "Can't move" , "Starve; quick" .)