| 1 | Medieval Latin | sensitivus | sensitive; detectable, perceivable |
| 2 | Latin | sentio | I feel, I sense, I perceive; I perceive, I am... |
| 3 | Proto-Italic | sentjō | — |
| 4 | Proto-Indo-European | sent- | to head for, to go, to travel; to feel |
| 5 | Proto-Indo-European | h₁es- | to be |