| 1 | Vulgar Latin | sennus | sense, reason, way; sense, reason; direction, way |
| 2 | Frankish | sinn | reason, judgement, mental faculty, way,... |
| 3 | Proto-Germanic | sinnaz | sense, perception; sense, meaning |
| 4 | Proto-Indo-European | sentnós | — |
| 5 | Proto-Indo-European | sent- | to head for, to go, to travel; to feel |
| 6 | Proto-Indo-European | h₁es- | to be |