| Krypte | crypt |
| Krypta | crypt |
| Kryptide | cryptid |
| Krypton | krypton |
| krypto- | crypto- |
| Kopte | Copt |
| Koryphäe | leader prominent person coryphaeus |
| Ägypten | Egypt |
| Ägypter | Egyptian |
| Septe | septum |
| Kryostase | cryostasis |
| Kryotron | cryotron |
| Kryptogame | cryptogam |
| Kryptojude | crypto-Jew |
| Apokryphe | apocrypha |
| Kryptologe | cryptologist |
| Kryptonit | Kryptonite |
| Kryptonym | cryptonym |
| kryophil | cryophilic |
| kryptisch | cryptic concealed cryptical hidden secret |