| 1 | English | deficiency | Inadequacy or incompleteness; An insufficiency,... |
| 2 | English | deficient | Lacking something essential; "often construed... |
| 3 | Latin | dēficiens | — |
| 4 | Latin | deficere | present active infinitive of dēficiō;... |
| 5 | Latin | defectus | failure; absence; weakness, failing, defect |
| 6 | Latin | deficio | I withdraw; I forsake, desert or abandon; I fail,... |
| 7 | Latin | faciō | — |
| 8 | Latin | -torium | nominative neuter singular of -tōrius; accusative... |
| 9 | Latin | -tōrius | — |
| 10 | Latin | -tor | -er |
| 11 | Proto-Italic | -tōr | — |
| 12 | Proto-Indo-European | -tōr | Derives agent nouns from verbs, denoting someone... |
| 13 | Proto-Indo-European | -tor-s | — |