In gambling game, fanatic doesn’t start to show fear (7,3)
I believe the answer is:
chicken out
'show fear' is the definition.
(I've seen this in another clue)
'in gambling game fanatic doesn't start' is the wordplay.
'in gambling' becomes 'chic' (I can't justify this - if you can you should believe this answer much more).
'game' becomes 'keno' (keno is a kind of game).
'fanatic' becomes 'nut' (I've seen this before).
'doesn't start' means to remove the first letter.
'nut' with its initial letter removed is 'ut'.
'chic'+'keno'+'ut'='CHICKEN OUT'
'to' is the link.
Can you help me to learn more?
(Other definitions for chicken out that I've seen before include "Back down" , "When yellow, withdraw" , "Get scared off" , "Be a wimp" , "Be too scared to do something" .)