Where does “invalid” come from?
Invalid comes from Latin invalidus, formed from the prefix in- meaning "not" and the root oyd- via Proto-Indo-European ne meaning "not," ultimately tracing to the sense of lacking strength or force.
invalid (English): Not valid; not true, correct, acceptable or...
Definitions
- Not valid; not true, correct, acceptable or...
Ancestry of “invalid”, step by step
invalid traces back through two separate lines of ancestry.
via English valid
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | valid | Well grounded or justifiable, pertinent;... |
| 2 | Middle French | valide | healthy, sound, in good order |
| 3 | Latin | validus | strong; healthy, well; worthy |
| 4 | Latin | valeō | to have strength, influence, power; to avail |
| 5 | Proto-Italic | walēō | to be strong |
| 6 | Proto-Indo-European | h₂wl̥h₁éh₁yeti | — |
| 7 | Proto-Indo-European | h₂welh₁- | to rule; strong, powerful; hair; wool |