| Kontrazeptivum | contraceptive |
| kontrazeptiv | contraceptive |
| Kontrazeption | contraception |
| Kontrahentin | opponent rival counterparty |
| Intransitivum | intransitive verb |
| Kontrastfigur | foil |
| Konzeptalbum | concept album |
| Konkretum | concrete noun |
| Kontrafaktur | contrafact |
| Kontrahent | opponent rival counterparty |
| Kontraktion | contraction |
| Kontraktur | contracture |
| Kontrollzentrum | control center control centre |
| Konzeption | conception |
| Transitivum | transitive verb |
| Antiseptikum | antiseptic |
| Kollektivum | collective noun |
| Konkretion | concretion |
| Kontaktzaun | electric fence |
| Kontraalt | contralto |