defuisse
defuisse is a Latin form of desum, meaning “be lacking, fail (+dat.)”. It is the perfect active infinitive.
Found 88 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 1.40.12: Quod non fore dicto audientes neque signa laturi dicantur, nihil se ea re commoveri: scire enim, quibuscumque exercitus dicto audiens non fuerit, aut male re gesta fortunam defuisse aut aliquo facinore comperto avaritiam esse convictam.
All forms of desum (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.