desuetudo
From LSJ
μή μοι θεοὺς καλοῦσα βουλεύου κακῶς· πειθαρχία γάρ ἐστι τῆς εὐπραξίας μήτηρ, γυνὴ Σωτῆρος· ὦδ᾽ ἔχει λόγος → When you invoke the gods, do not be ill-advised. For Obedience is the mother of Success, wife of Salvation—as the saying goes.
Latin > English (Lewis & Short)
dēsŭētūdo: ĭnis, f. desuesco,
I discontinuance of a practice or habit, disuse, desuetude: armorum, Liv. 1, 19: bellandi, Fronto, princ. hist. p. 3, 7: desuetudine tardi, Ov. M. 14, 436; so absol., id. Tr. 5, 7, 57; Dig. 1, 3, 32 al.
Latin > French (Gaffiot 2016)
dēsuētūdō,¹⁵ ĭnis, f. (desuesco), désaccoutumance, perte d’une habitude : Liv. 1, 19, 2 || désuétude : Dig. 1, 3, 32.