Crossword Genius

Tight son refuses to eat (5)

Ross

I believe the answer is:

fasts

'refuses to eat' is the definition.

'tight son' is the wordplay.
'tight' becomes 'fast' (both can mean secure).
'son' becomes 's'.
'fast'+'s'='FASTS'

(Other definitions for fasts that I've seen before include "Times of abstinence" , "Abstains from food" , "Goes without food" , "Goes hungry" , "Avoids food" .)

I've seen this clue in The Telegraph.
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