| krypto- | crypto- |
| Krypton | krypton |
| Krypta | crypt |
| Krypte | crypt |
| Kryotron | cryotron |
| Kryptide | cryptid |
| Kryptonit | Kryptonite |
| Kryptonym | cryptonym |
| Treptow | Treptow |
| Zepto- | zepto- |
| proto- | proto- |
| Kryptogame | cryptogam |
| Kryptojude | crypto-Jew |
| Kryptologe | cryptologist |
| kryophil | cryophilic |
| kryptisch | cryptic concealed cryptical hidden secret |
| Prypjat | Pripyat |
| Koryphäe | leader prominent person coryphaeus |
| Ägypten | Egypt |
| Ägypter | Egyptian |