| Kretin | cretin |
| Kreation | creation |
| Kreolin | Creole |
| Kreterin | Cretan |
| Kredit | credit loan |
| Kreis | circle district |
| Kren | chucklehead dimwit dumbhead fool bragging boasting craving for admiration fanfaronade roistering investor sponsor financial backer money lender |
| Kreta | Crete |
| Kreter | Cretan |
| Kretinismus | cretinism |
| kreativ | creative |
| Retina | retina |
| treten | step tread kick |
| Koptin | Copt |
| Britin | Briton |
| Gratin | gratin |
| Karotin | carotene carotin |
| Keltin | Celt Kelt |
| Keratin | keratin |
| Kroatin | Croatian |