Es un marchan de mouert subito.

Meaning

He is a peddler of sudden death.

Note : Applied disparagingly to deceivers, charlatans and those who peddle fine words in order to dupe others.

Theme

Deceivers and the Vain

Source : La Tour-Keyrié, Recueil de proverbes provençaux (1882), Gallica — public domain. Maritime Mistralian normalisation by Lingua Nostra.