| Klaugemauer | Western Wall |
| Klagemauer | Wailing Wall Western Wall |
| Klagender | wailer |
| Läuferbauer | bishop pawn |
| Klagelied | dirge litany |
| Klagelieder | Lamentations |
| Klagende | wailer |
| Klamauk | ballyhoo noise |
| Klanggemälde | soundscape |
| Klanglaut | sonorant |
| Klangtreue | fidelity |
| Klausenburg | Cluj-Napoca |
| Klausner | anchorite hermit |
| Klagenfurt | Klagenfurt |
| Klammer | paper clip bracket parenthesis brace clamp |
| Klausur | enclosure exam test |
| Kläger | plaintiff |
| Blauhäher | blue jay |
| Lauerer | lurker |
| blaugrau | blue-gray |