| 1 | Old French | indifferent | — |
| 2 | Latin | indifferens | indifferent; neither good nor bad; unconcerned |
| 3 | Latin | differēns | — |
| 4 | Latin | differre | present active infinitive of differō |
| 5 | Latin | differo | I carry different ways, spread, scatter,... |
| 6 | Latin | dis- | asunder, apart, in two; reversal, removal;... |
| 7 | Latin | calceus | shoe |
| 8 | Latin | calx | limestone; chalk; the finish line |
| 9 | Ancient Greek | χάλιξ | small stone, pebble; gravel, rubble |