scirent
scirent is a Latin form of scio, meaning “know”. It is the 3rd person plural imperfect active subjunctive.
Found 64 times in the Latin texts on Socratos.
Where it is used
Cicero, In C. Verrem 2.1.51: … miliarissimis in hanc rem testimonia denuntiaturum, qui tuae domi semper fuissent, ex quibus quaererem, signa scirentne fuisse quae non essent?
All forms of scio (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.