| 1 | French | directeur | leading, managing; director; school principal |
| 2 | Latin | dīrector | — |
| 3 | Latin | dīrectus | — |
| 4 | Latin | dīrigō | — |
| 5 | Latin | dis- | asunder, apart, in two; reversal, removal;... |
| 6 | Latin | calceus | shoe |
| 7 | Latin | calx | limestone; chalk; the finish line |
| 8 | Ancient Greek | χάλιξ | small stone, pebble; gravel, rubble |