| Konkurrent | competitor |
| Konkurrentin | competitor |
| Konkurrenz | competition competitor |
| Konkurrenz- | competitive |
| Konkrement | calculus |
| Konsument | consumer |
| konkludent | conclusive implied |
| konkordant | concordant |
| konkret | concrete |
| konvergent | convergent |
| rekurrent | recurrent |
| Kookkurrenz | co-occurrence |
| Knurren | growl |
| knurren | growl rumble |
| knurrend | snarling |
| Kondiment | condiment |
| Kontingent | contingent |
| kontingent | contingent |
| Konvent | convent |
| konkurrenzlos | unrivaled |