IdiomBody & SensesFrench

Mettre la puce à l'oreille

Meaning: To arouse someone's suspicion or make them uneasy about something.

Literally: To put the flea in the ear

Example: “Ce sont ses retards répétés qui m'ont mis la puce à l'oreille.” — It was his constant lateness that made me suspect something.

English equivalent: To set alarm bells ringing

Equivalents in other languages

Origin: The phrase is very old and first meant something else: from the 13th century until the late 16th, putting a flea in someone's ear meant arousing amorous desire, the itch standing for longing, and La Fontaine still plays on that sense in his Contes. In the 17th century it shifted to worry and then to suspicion: a flea in the ear is an itch one cannot ignore, and a suspicion works the same way.

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