| 1 | English | inerrant | Exhibiting inerrancy; without error |
| 2 | English | errant | Straying from the proper course or standard, or... |
| 3 | Middle English | erraunt | — |
| 4 | Anglo-Norman | erraunt | Alternative form of errant |
| 5 | Old French | errant | wandering; nomadic |
| 6 | Old French | errer | to walk ; to wander; to travel; to voyage |
| 7 | Latin | errantem | accusative masculine singular of errāns;... |
| 8 | Latin | errō | — |
| 9 | Proto-Italic | erzāō | roam, wander; go astray, waver |
| 10 | Proto-Indo-European | h₁ers- | to flow |