profectos
profectos is a Latin form of proficio, meaning “make progress, advance; accomplish, be useful”. It is the perfect passive participle accusative plural masculine.
Found 33 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 6.40.4: Hoc veteres non probant milites, quos sub vexillo una profectos docuimus. Itaque inter se cohortati duce Gaio Trebonio, equite Romano, qui eis erat praepositus, per medios hostes perrumpunt incolumesque ad unum omnes in castra perveniunt.
All forms of proficio (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.