IdiomDaily LifeFrench

Mettre le doigt dans l'engrenage

Meaning: To take a first small step that drags you into something far larger.

Literally: To put one's finger in the gears

Example: “Il a accepté un petit pari en ligne et a mis le doigt dans l'engrenage.” — He accepted one small online bet and started down a slippery slope.

English equivalent: A slippery slope

Equivalents in other languages

Origin: Once a finger is caught between two turning gears the mechanism pulls in the hand and then the arm. The warning is specifically about the first step being irreversible, not about the danger being obvious.

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