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Stygius

Φοβοῦ τὸ γῆρας, οὐ γὰρ ἔρχεται μόνον -> Fear old age, for it never comes alone
Menander

Latin > English (Lewis & Short)

Stygĭus: a, um, v. Styx, II. 1.

Latin > French (Gaffiot)

Stўgĭus, v. Styx.