| Kaltmiete | bare rent base rent basic rent basic rental charge |
| Kalamit | calamites |
| Kalumet | calumet peace pipe |
| Warmmiete | heating including rent |
| Kathete | cathetus |
| Kalette | culet |
| Kallisto | Callisto |
| Kalotte | zucchetto calot |
| Kaltzeit | glacial |
| Kältewelle | cold snap |
| kaltmachen | off |
| Kalamität | calamity |
| Kalkmilch | lime water |
| Kalliope | Calliope |
| Kalorie | calorie |
| Kalorimeter | calorimeter |
| Kaltwelle | cold wave cold-perm permanent wave |
| Kälte | cold chill chilliness coldness frigidity |
| Altimeter | altimeter |
| Altmeister | doyen |