| 1 | Middle English | trinite | — |
| 2 | Anglo-Norman | trinite | — |
| 3 | Latin | trīnitās | — |
| 4 | German | Dreieinigkeit | Trinity |
| 5 | German | Einigkeit | unity; consensus, agreement |
| 6 | German | -keit | Alternative form of -heit; -ness, -ty; -ty |
| 7 | German | -heit | Converts an adjective into a noun and usually... |
| 8 | Middle High German | -heit | — |
| 9 | Old High German | -heit | nature, character |
| 10 | Proto-West Germanic | -haidu | — |
| 11 | Proto-Germanic | haiduz | manner, way; personality, character; appearance |
| 12 | Proto-Indo-European | (s)kayt- | — |