| 1 | English | effect | The result or outcome of a cause; Impression left... |
| 2 | Middle English | effect | — |
| 3 | Old French | effect | effect; judgment; decree |
| 4 | Latin | effectus | made out, worked out, completed, finished,... |
| 5 | Latin | efficiō | — |
| 6 | Latin | ex | A name of the letter "X"; out of, from |
| 7 | Latin | commūnicō | — |
| 8 | Latin | commūnis | — |
| 9 | Old Latin | com(m)oinis | — |
| 10 | Proto-Italic | kommoinis | — |
| 11 | Proto-Indo-European | ḱom-moy-ni- | held in common |
| 12 | Proto-Indo-European | ḱóm | beside, near, by, with |
| 13 | Proto-Indo-European | ḱe | Deictic particle, here; Post-positional... |
| 14 | Middle English | kyt | — |
| 15 | German | kitt | — |
| 16 | Old High German | kuti | — |
| 17 | Proto-West Germanic | kwidu | gum, resin |
| 18 | Proto-Germanic | kweduz | resin |
| 19 | Proto-Indo-European | gʷet- | resin, gum; to say, speak |