| Hohe Schlüsselblume | oxlip |
| Schlüsselblume | cowslip |
| Notenschlüssel | clef |
| Schlüsselbund | bunch of keys |
| Verschlüsselung | encryption |
| Aufschlüsselung | breakdown |
| Hauptschlüssel | master key |
| Hausschlüssel | housekey |
| Schlüsselband | lanyard |
| Schlüsselkarte | keycard |
| Verschlußlaut | plosive |
| Verschlusslaut | stop |
| verschlüsselt | encrypted |
| Entschlüsselung | decipherment decoding decryption |
| Gabelschlüssel | open end spanner |
| Schlüsselbein | collarbone clavicle |
| Schlüsselfrage | key question |
| Schlüsselloch | keyhole keyway |
| Schlüsselrolle | key role |
| verschlüsseln | encrypt cipher |