| Root | Meaning in English | Origin language | Etymology (root origin) | English examples |
|---|---|---|---|---|
| -kary- | nucleus | Greek | καρυον (karyon) | Eukaryote, Prokaryote |
| kastan- | brown | Greek | καφέ (kafé) | Kastanophobia |
| kilo- | thousand | Greek | χίλιοι (khílioi) | kilobyte, kilogram, kilometer, kiloliter |
| kine-, cine- | movement, motion | Greek | κινεῖν (kineîn), κίνησις (kínēsis), κίνημα (kínēma) | akinesia, akinesis, akinete, akinetic, cinema, cinematic, diakinesis, dyskinesia, dyskinetic, hyperkinesia, hyperkinesis, hyperkinetic, hypokinesia, hypokinesis, hypokinetic, kinematics, kinescope, kinesiologist, kinesiology, kinesis, kinesthetic, kinetic, kineticism, kinetics, kinetochore, kinetophobia, photokinesis, telekinesis |
| klept- | steal | Greek | κλέπτειν (kléptein), κλέπτης (kléptēs) | kleptocracy, kleptomania, kleptophobia, kleptoplasty |
| ktet- | possession, ownership | Greek | κτητικός (ktētikós), κτήτωρ (ktḗtōr) | ktetic, ktetor |
| kudo- | glory | Greek | κῦδος (kûdos) | kudos |