quinquagiens
From LSJ
Ἐχθροὺς ἀμύνου μὴ ‘πὶ τῇ σαυτοῦ βλάβῃ → Ulciscere hostem, non tamen damno tuo → Die Feinde wehre ohne Schaden für dich ab
Latin > English (Lewis & Short)
quinquāgĭens: adv. id.,
I fifty times: dimicare, Plin. 7, 25, 25, § 92: centena milia, id. 6, 9, 10, § 27: perfricare, Cels. 2, 14.