| irrtümlich | erroneous |
| räumlich | spatial |
| Irrlicht | will o' the wisp |
| Irrtum | mistake error fallacy misapprehension |
| irrtümlicherweise | erroneously mistakenly |
| altertümlich | ancient |
| eigentümlich | idiosyncratic bizarre |
| förmlich | punctilious formal directly |
| grämlich | sullen |
| erbärmlich | miserable abysmal |
| ärmlich | meagre |
| bräutlich | bridal |
| fraulich | womanly |
| grauslich | disgusting |
| tunlich | expedient |
| beruflich | professional occupational vocational |
| betulich | fussy |
| bräunlich | brownish |
| erfreulich | pleasant pleasing |
| erstaunlich | amazing |