| Irrtum | mistake error fallacy misapprehension |
| irrtümlich | erroneous |
| Erratum | erratum |
| Irre | madwoman astray lunatic |
| irre | crazy insane mad |
| Irrer | crazy |
| Irrsal | blunder |
| Irrweg | aberration wandering path wrong path wrong track wrong way |
| Zirrus | cirrus |
| irreal | unreal unreally |
| irren | be mistaken err roam wander |
| irrig | errorneous mistaken |
| Artus | King Arthur |
| Partus | childbirth |
| Tartu | Tartu |
| Artur | Arthur |
| Khartum | Khartoum |
| Tortur | torture |
| Uhrturm | clock tower |
| dartun | turn out |