| konfrontativ | confrontational contrastive |
| Konfrontation | confrontation |
| konjunktiv | conjunctive |
| Konjunktiv | subjunctive conjunctive mood conjunctive conjunctive mode |
| kontrazeptiv | contraceptive |
| Konfetti | confetti |
| Konformation | conformation |
| Konformität | conformity |
| Konnotation | connotation |
| konativ | conative |
| konfrontieren | confront |
| konservativ | conservative tory |
| konspirativ | conspirative |
| konstitutiv | founding |
| kontemplativ | contemplative |
| kontraintuitiv | counterintuitive |
| ostentativ | ostentatious ostentation |
| Komitativ | comitative case |
| denotativ | denotative |
| karitativ | charitable caritative |