juvenesco
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
Latin > English
juvenesco juvenescere, juvenui, - V :: grow up; grow young again, regain youth
Latin > French (Gaffiot 2016)
jŭvĕnēscō,¹⁵ nŭī ( Tert.), ĕre (juvenis), intr.,
1 acquérir la force de la jeunesse, grandir : Hor. O. 4, 2, 54
2 redevenir jeune, rajeunir [en parl. de l’homme, des animaux et des plantes] : Ov. Am. 3, 7, 41 ; Plin. 8, 224 ; 21, 69 || [fig.] reprendre de l’éclat, de la vigueur : Claud. Laud. Stil. 2, 20 ; Stat. Th. 3, 583.