Serenator
From LSJ
ἄλογον δὴ τὸ μήτε μάχης ἄρξασθαι μήτε τοὺς φίλους φυλάξαι, ἐὰν ὑπό γε τῶν βαρβάρων ἀδικῆσθε → It is irrational neither to begin battle nor to guard the friends, if you are ever wronged by the foreigners
Latin > English (Lewis & Short)
Sĕrēnātor: ōris, m. sereno,
I he that makes fair weather, the clearer-up, an epithet of Jupiter, App. de Mundo, p. 75, 7; Inscr. Gud. p. 3, n. 8; p. 3, n. 9; p. 4, n. 1 sq.; cf. serenus.
Latin > French (Gaffiot 2016)
Sĕrēnātŏr, ōris, m. (sereno), qui rend l’air serein [épith. de Jupiter] : Apul. Mund. 37.