| 1 | Scottish Gaelic | fios | knowledge; indication, information, message,... |
| 2 | Middle Irish | fis | — |
| 3 | Old Irish | fius | knowledge |
| 4 | English | fuse | A cord that, when lit, conveys the fire to some... |
| 5 | English | fusion | The act of merging separate elements, or the... |
| 6 | Middle French | fusion | fusion |
| 7 | Old French | fusion | — |
| 8 | Latin | fusio | a pouring out; an outpouring, effusion; a... |
| 9 | Latin | -tiō | — |
| 10 | Latin | dissertātiō | — |
| 11 | Latin | dissertus | arranged, disposed; explained |
| 12 | Latin | disserere | second-person singular future passive indicative... |
| 13 | Latin | dis- | asunder, apart, in two; reversal, removal;... |
| 14 | Latin | calceus | shoe |
| 15 | Latin | calx | limestone; chalk; the finish line |
| 16 | Ancient Greek | χάλιξ | small stone, pebble; gravel, rubble |