socias
socias is a Latin form of socius, meaning “companion, partner; ally; (adj.) allied, shared”. It is the accusative plural feminine adjective.
Found 45 times in the Latin texts on Socratos.
Where it is used
Vergil, Aeneid 1.600: urbe, domo, socias, grates persolvere dignas
All forms of socius (declension 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.