inconsuetus
From LSJ
εὐκαταφρόνητός ἐστι σιγηρὸς τρόπος → a way of life disposed to silence is contemptible (Menander)
Latin > English (Lewis & Short)
in-consŭētus: a, um, adj.
I Unusual (post-Aug.): sermo, Vitr. praef. 5: salsitudo, id. 1, 4.—
II Unused, unaccustomed; with gen.: opimae mensae, Sil. 11, 282.
Latin > French (Gaffiot 2016)
incōnsuētus, a, um,
1 inaccoutumé : Vitr. Arch. 1, 4
2 qui n’a pas l’habitude : alicui rei Sil. 11, 282, d’une chose.