| Kavallerist | cavalryman |
| Kavallerie | cavalry |
| Kavalier | cavalier dance partner |
| Havarist | disabled vessel |
| Artillerist | artilleryman artillerist |
| Galerist | gallerist |
| Karrierist | careerist |
| Kabalist | caballer |
| Javanerin | Javanese |
| JavaScript | JavaScript |
| Valerian | Valerian |
| Valerie | Valerie Valari Valarie Valeri Valery Valleri |
| kovalent | covalent |
| Kalaallisut | Greenlandish |
| Kallisto | Callisto |
| Ballerina | ballerina ballet dancer pump |
| Caballero | gentleman |
| Knaller | firecracker |
| Korallenriff | coral reef |
| Parallelität | parallelism |