superventores
From LSJ
ᾗ μήτε χλαῖνα μήτε σισύρα συμφέρει → content neither with cloak nor rug, be never satisfied, can't get no satisfaction, be hard to please
Latin > English (Lewis & Short)
sŭperventōres: um, m. supervenio,
I a kind of soldiers (perh. employed in sudden attacks), Amm. 18, 9, 3.
Latin > French (Gaffiot 2016)
sŭperventōrēs, um, m. (supervenio), troupes de réserve [pour attaques soudaines] : Amm. 18, 9, 3.