egisset
egisset is a Latin form of ago, meaning “drive, do, act; discuss”. It is the 3rd person singular pluperfect active subjunctive.
Found 52 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Civili 3.90: … uti posse, quanto studio pacem petisset; quae per Vatinium in colloquiis, quae per Aulum Clodium cum Scipione egisset, quibus modis ad Oricum cum Libone de mittendis legatis contendisset. Neque se umquam abuti militum sanguine …
All forms of ago (conjugation table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.