| Schlüsselrolle | key role |
| Schlüsselblume | cowslip |
| Schlüsselkarte | keycard |
| Schlüsselring | keyring |
| Schlüsselfrage | key question |
| Schlüsselloch | keyhole keyway |
| Schlüsselwort | keyword |
| Schlussrunde | final |
| Schlüsselband | lanyard |
| Schlüssel | key spanner wrench |
| Schlüsselbein | collarbone clavicle |
| Schlüsselbund | bunch of keys |
| Schlüsselfigur | central character key figure key person key player |
| Schlüsselkind | latchkey kid |
| Schleierwolke | cirrostratus |
| Schlummernde | dozer |
| Schlussanträge | opinion |
| Schlussfrau | goalkeeper |
| Schlussläufer | anchorman |
| Schlußläufer | anchorman |