| 1 | Latin | expensivus | — |
| 2 | Latin | expendo | I weigh; I pay out; I judge |
| 3 | Latin | ex- | out, away; throughout; thoroughly |
| 4 | Latin | e | The name of the letter "E"; out of, from |
| 5 | Latin | ex | A name of the letter "X"; out of, from |
| 6 | Latin | commūnicō | — |
| 7 | Latin | commūnis | — |
| 8 | Old Latin | com(m)oinis | — |
| 9 | Proto-Italic | kommoinis | — |
| 10 | Proto-Indo-European | ḱom-moy-ni- | held in common |
| 11 | Proto-Indo-European | ḱóm | beside, near, by, with |
| 12 | Proto-Indo-European | ḱe | Deictic particle, here; Post-positional... |
| 13 | Middle English | kyt | — |
| 14 | German | kitt | — |
| 15 | Old High German | kuti | — |
| 16 | Proto-West Germanic | kwidu | gum, resin |
| 17 | Proto-Germanic | kweduz | resin |
| 18 | Proto-Indo-European | gʷet- | resin, gum; to say, speak |