sale

dirty; bad, unpleasant; vile, despicable

“Le prof est capable de me fiche une sale note rien que parce qu'il m'a aperçue en ville le mercredi.” — The teacher can give me a bad grade just because he saw me in town on Wednesday.

Inherited from Middle French sale, from Old French sale (“dull, dirty”), from Frankish *salu (“dull, dirty grey”), from Proto-Germanic *salwaz (“dusky, dark, muddy”), from Proto-Indo-European *salw-, *sal- (“dirt, dirty”). Cognate with Old High German salo (“dull, dirty grey”), Old English salu (“dark, dusky”), Old Norse sǫlr (“yellowish”). More at sallow.