Where does “unfilterable” come from?
unfilterable (English) comes from English filterable, from English filter, from German filter, from French filtré, from Medieval Latin filtrum, from Frankish filtir, from Frankish *felt, from Proto-Germanic *felt — to cover, to wrap; skin, hide, cloth; to fold.
unfilterable (English): Not filterable
Ancestry of “unfilterable”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | English | filterable | Able to be separated by filtration; That can pass... |
| 2 | English | filter | A device which separates a suspended, dissolved,... |
| 3 | German | filter | inflection of filtern:
## first-person singular... |
| 4 | French | filtré | past participle of filtrer; filtered |
| 5 | Medieval Latin | filtrum | felt |
| 6 | Frankish | filtir | — |
| 7 | Frankish | *felt | — |
| 8 | Proto-Germanic | *felt | — |
| 9 | Proto-Indo-European | peld- | something beaten or compressed; felt |
| 10 | Proto-Indo-European | pelh₂- | to approach |
| 11 | Proto-Indo-European | pel- | to cover, to wrap; skin, hide, cloth; to fold |