| Klub | club |
| Klubhaus | clubhouse |
| klug | smart clever wise judicious prudent intelligent |
| Klubjacke | blazer club jacket |
| Kluft | cleft fissure joint gulf gap rift garb uniform |
| unklug | imprudent |
| Aeroklub | aero club |
| Klubsessel | club chair |
| Kluppe | clothespin clothes peg |
| Zyklus | cycle |
| Klunker | rock |
| altklug | precocious |
| klumpig | lumpy |
| Golfklub | golf club |
| Inkluse | fossil inclusion resin |
| Klumpen | lump nugget |
| klumpen | lump |
| Kluster | cluster |
| Klüngel | clique crowd nepotistic network old boys' network |
| lübsch | Lübeckian |