| 1 | Italian | socio | member, affiliate, partner, associate, fellow,... |
| 2 | Latin | socius | sharing, joining in, partaking, associated;... |
| 3 | Ancient Greek | πάθος | pain, suffering, death; misfortune, calamity,... |
| 4 | Ancient Greek | πάσχω | to undergo, experience; have someone do something... |
| 5 | Proto-Indo-European | bʰendʰ- | to bind; bond |