| 1 | Spanish | señor | mister, sir, lord; gentleman; master |
| 2 | Old Spanish | sennor | lord |
| 3 | Vulgar Latin | senjor | master, elder, lord, nobleman |
| 4 | Latin | senior | older, elder; rather old; a lord, sir; an abbot |
| 5 | Latin | senex | old, aged, elderly; old person, old man, old... |
| 6 | Proto-Indo-European | sénos | old |