perofficiose
From LSJ
ἐγγυητής τοῦ ἀργυρίου ἀξιόχρεως → trustworthy guarantor for the money
Latin > English (Lewis & Short)
pĕr-offĭcĭōsē: adv.,
I very serviceably, very attentively: perofficiose et peramanter aliquem observare, Cic. Fam. 9, 20, 3.
Latin > French (Gaffiot 2016)
pĕroffĭcĭōsē, avec beaucoup d’égards : Cic. Fam. 9, 20, 3.