potuisti

potuisti is a Latin form of possum, meaning “be able, can”. It is the 2nd person singular perfect active indicative.

Found 96 times in the Latin texts on Socratos.

Where it is used

Cicero, Pro S. Roscio Amerino 80: … quit ut homines volgo impune occiderentur; qua re hoc tu propter multitudinem sicariorum nullo negotio facere potuisti. interdum mihi videris, Eruci, una mercede duas res adsequi velle, nos iudicio perfundere, accusare autem eos …

Pliny the Younger, Epistulae 10.82.1: Potuisti non haerere, mi Secunde carissime, circa id de quo me consulendum existimasti, cum propositum meum optime nosses, non ex metu nec terrore hominum aut criminibus maiestatis reverentiam nomini meo acquiri.

All forms of possum (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.