| Klaviatur | musical keyboard keyboard |
| Klavier | piano |
| Kaviar | caviar |
| Gladiator | gladiator |
| Plagiator | plagiarist |
| Karikatur | caricature burlesque cartoon |
| Kurvatur | curvature |
| Klamauk | ballyhoo noise |
| Klavichord | clavichord |
| Klavikula | clavicle |
| Klafter | fathom |
| Klausur | enclosure exam test |
| Aviatik | aviation |
| Kavität | cavity |
| Navigator | navigator |
| aviär | avian |
| Miniatur | miniature |
| Nuntiatur | nunciature |
| Plagiat | plagiarism |
| Pädiater | pediatrician |