Meaning of “put your neck on the line” in the English Dictionary

british dictionary

"put your neck on the line" in British English

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put your neck on the line

to do something that you know might fail and spoil other people's opinion of you or cause you to lose money:

There's a lot of money at stake here and none of the partners wants to put his neck on the line.
No one wants to put their neck on the line and predict an outcome.

(Definition of “put your neck on the line” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)