| Konfetti | confetti |
| Konzetti | extended metaphor |
| Konfekt | candy |
| Konfutse | Confucius |
| Konvent | convent |
| Konvertit | convert |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Kontext | context |
| Konzept | draft concept conception |
| Konzert | concert |
| Mofette | mofette |
| Kokette | coquette |
| Kornett | cornet |
| Korsett | corset |
| Korvette | corvette |
| Sonett | sonnet |
| honett | decent |
| kokett | coquettish |
| Kontor | office |
| Konzertina | concertina |