perdurus
From LSJ
αἰτήσεις ἀκοὐεις σῶν ἱκετῶν· ταχἐως συνδραμεῖς ἀναπαὐων εὐεργετῶν· ἰάματα παρἐχεις, Ἱερἀρχα, τῇ πρὀς Θεὀν παρρησἰᾳ κοσμοὐμενος → You hear the prayers of your suppliants; quickly you come to their assistance, bringing relief and benefits; you provide the remedies, Archbishop, since you are endowed with free access to God.
Latin > English (Lewis & Short)
per-dūrus: a, um, adj.,
I very hard (post-class.): interpretatio, Dig. 48, 3, 2.
Latin > French (Gaffiot 2016)
perdūrus, a, um, très dur, très rigoureux : Papin. Dig. 48, 3, 2.