| Konsumtion | consumption |
| Konsumption | merger consumption |
| Konduktion | conduction |
| Konkretion | concretion |
| Konsultation | consultation |
| Kondition | condition |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Konfusion | bewilderment |
| Konjugation | conjugation |
| Konjunktion | conjunction |
| Konkussion | concussion |
| Konstruktion | construction |
| Konvention | convention |
| Konvulsion | convulsion |
| Konzeption | conception |
| Korruption | corruption |
| Konsekration | dedication |
| Konspiration | conspiracy |
| Konsumware | commodity |
| Kontorsion | contortion |