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English definition of “wimp out”

wimp out

informal
verb uk phrasal verb with wimp   /wɪmp/ us  
to decide not to do something because you are too frightened: I was going to do a parachute jump but I wimped out at the last minute.
(Definition of wimp out from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of wimp out?
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