adfuisse
adfuisse is a Latin form of adsum, meaning “be present, be at hand; help”. It is the perfect active infinitive.
Found 38 times in the Latin texts on Socratos.
Where it is used
Cicero, Pro S. Roscio Amerino 123: ego sic existimo, qui quaeri velit ex eis quos constat, eum caedes facta sit, adfuisse, cum cupere verum inveniri; qui id recuset, eum profecto, tametsi verbo non audeat, tamen re ipsa de malefici …
All forms of adsum (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.