Flip out (4)

There are a few possibilities for this:

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5 2,5

snap

'flip out' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for snap that I've seen before include "Break off - card-game" , "Crack - shot" , "Picture" , "Break under strain" , "Be irritable at the card game" .)

I've seen this clue in the Universal and the Newsday.

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