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
| Step | Language | Word | Meaning |
|---|
| 1 | English | in- | in, into, towards, within; in, into; Used with... |
| 2 | Middle English | in- | — |
| 3 | Old English | in- | in, into; on, upon; internal, positioned on the... |
| 4 | Old English | in | in; Alternative form of inn |
| 5 | Proto-West Germanic | *in | — |
| 6 | Proto-Germanic | in | in; into |
| 7 | Proto-Indo-European | én | in |
Words derived from “invalid”