| Klarspüler | rinse aid |
| Klapsmühle | madhouse |
| Klausner | anchorite hermit |
| Klärgrube | septic tank |
| Klapper | rattle |
| Klassiker | classic |
| Klausur | enclosure exam test |
| klarstellen | clarify to make something clear |
| Kartular | cartulary |
| Haarspalter | pettifogger |
| überspülen | flood overflow wash over |
| abspulen | unwind reel off |
| abspülen | wash |
| Kassler | Kassler |
| Klagender | wailer |
| Klappen | folding |
| klappen | fold work |
| Klatschen | clap |
| klatschen | clap slap smack splash gossip backbite mardle |
| Klavikula | clavicle |