il y a anguille sous roche

== French == === Etymology === Literally, “there is an eel hidden beneath a rock”. Compare also Latin latet anguis in herbā (whence English snake in the grass), as well as Dutch addertje onder het gras. === Pronunciation === IPA(key): /i.j‿a.vwa.ʁ‿ɑ̃.ɡij su ʁɔʃ/ === Verb === y avoir anguille sous roche (impersonal, figuratively) for there to be something fishy and suspicious going on, for there to be something in the wind, in the offing il y a anguille sous roche ― I smell a rat; something is afoot. === Further reading === "y avoir anguille sous roche", Dictionnaire des francophones [1] "il y a anguille sous roche", Les nouvelles expressions de monsieur dictionnaire, Jacques Mercier, 2017, p.12