| 1 | English | secrete | separated; To extract a substance from blood,... |
| 2 | English | Secret | — |
| 3 | Middle English | secrette | — |
| 4 | Old French | secret | — |
| 5 | Latin | sēcrētus | — |
| 6 | Ancient Greek | ἀγωγός | leading, guiding; guide, escort; leading to |
| 7 | Ancient Greek | ἄγω | To lead, fetch, bring along , take with; To carry... |
| 8 | Proto-Hellenic | ágō | to lead, to guide |
| 9 | Proto-Indo-European | h₂éǵeti | to be driving |
| 10 | Proto-Indo-European | h₂eǵ- | to drive |