perdiligens
From LSJ
Latin > English (Lewis & Short)
per-dīlĭgens: entis, adj.,
I very diligent: homo, Cic. Q. Fr. 3, 5, 6.—Adv.: perdīlĭgenter, very diligently, Cic. Att. 1, 11, 1: complecti aliquid, id. Brut. 3, 14.
Latin > French (Gaffiot 2016)
perdīlĭgēns, tis, très consciencieux : Cic. Q. 3, 5, 6.
Latin > German (Georges)
per-dīligēns, entis, sehr sorgfältig, sehr pünktlich, res est hominis perdiligentis, erfordert große Pünktlichkeit, Cic. ad Q. fr. 3, 5. § 6: Maecius perdiligens carminum fuit aestimator, Porphyr. Hor. de art. poët. 387.