en mettre sa main au feu

The French expression “en mettre sa main au feu” translates literally to “to put one’s hand over the fire”.

English meanings:

• bet your life on it
• bet your bottom dollar on it
• to put money on it

French meaning:

• être sur de quelque chose – to be sure of something
• en jurer – to swear (to be true)

Example sentence:

• Martin et Sylvie ne vont jamais rester ensemble. J’en mettrais ma main au feu! Martin and Sylvie will never stay together. I’d be my life on it!

Synonym expression:

• mettre sa main à couper – to put one’s hand (out) to be cut (to bet your bottom dollar)

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