| irrsinnig | mind-boggling insane |
| Irrsinn | insanity lunacy madness |
| irrwitzig | ludicrous |
| starrsinnig | obstinate stubborn |
| widersinnig | absurd |
| trübsinnig | dismal |
| unsinnig | unreasonable absurd nonsensical |
| irrsinnig witzig | hilarious |
| Irrgang | aberration wandering path wrong path wrong track wrong way |
| irrig | errorneous mistaken |
| Parsing | parsing |
| viersilbig | quadrisyllabic |
| Wirsing | Savoy cabbage |
| ersinnen | imagine invent |
| viersitzig | four-seater |
| feinsinnig | subtle |
| im Sinne | as in |
| eigensinnig | wayward willful obstinate pig-headed stubborn froward |
| wahnsinnig | mad |
| innig | heartfelt abstruse close |