| 1 | English | realtime | Alternative form of real-time |
| 2 | English | real | True, genuine, not merely nominal or apparent;... |
| 3 | Middle English | real | real, true, factual; concerning possessions;... |
| 4 | Old French | reel | — |
| 5 | Latin | reālis | — |
| 6 | Latin | rēs | — |
| 7 | Latin | vindicatio | civil lawsuit; protection, defence; vindication;... |
| 8 | Latin | vindicō | — |
| 9 | Latin | vindex | claimant, vindicator |
| 10 | Latin | dīcō | — |
| 11 | Latin | -tiō | — |
| 12 | Latin | dissertātiō | — |
| 13 | Latin | dissertus | arranged, disposed; explained |
| 14 | Latin | disserere | second-person singular future passive indicative... |
| 15 | Latin | dis- | asunder, apart, in two; reversal, removal;... |
| 16 | Latin | calceus | shoe |
| 17 | Latin | calx | limestone; chalk; the finish line |
| 18 | Ancient Greek | χάλιξ | small stone, pebble; gravel, rubble |