| klug | smart clever wise judicious prudent intelligent |
| Klub | club |
| Klugheit | prudence |
| Flug | flight |
| unklug | imprudent |
| Kluft | cleft fissure joint gulf gap rift garb uniform |
| Kaluga | Kaluga |
| Lüge | lie |
| Pflug | plough plow |
| flugs | quickly |
| altklug | precocious |
| klumpig | lumpy |
| Kluppe | clothespin clothes peg |
| Klüngel | clique crowd nepotistic network old boys' network |
| Zyklus | cycle |
| Beluga | beluga |
| flügge | fledged |
| Abflug | departure takeoff |
| Anflug | approach touch |
| Auslug | crow's nest lookout |