pergnarus
From LSJ
τὸ πολὺ τοῦ βίου ἐν δικαστηρίοις φεύγων τε καὶ διώκων κατατρίβομαι → waste the greater part of one's life in courts either as plaintiff or defendant
Latin > English (Lewis & Short)
per-gnārus: a, um, adj.,
I that has a thorough knowledge of, that is very experienced, well versed in any thing (very rare): locorum pergnari, Sall. Fragm. ap. Non. 554, 21: colendi, App. Mag. p. 290, 34.
Latin > French (Gaffiot 2016)
pergnārus, a, um, qui connaît parfaitement [avec le gén.]: Sall. H. 4, 1 (22).
Latin > German (Georges)
per-gnārus, a, um, sehr kundig, locorum, Sall. hist. fr. 4, 1 (22): magia colendi eos (immortales) ac venerandi pergnara, Apul. apol. 26.