| 1 | Old High German | sīn | his; to be |
| 2 | Proto-West Germanic | sinn | sense, perception; sense, meaning; reason, mental... |
| 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 |