Where does “interfirm” come from?
Interfirm derives from English firm, from Italian firma, from Latin firmare meaning "to make firm," from Latin firmus meaning "firm," from Proto-Indo-European dʰer- meaning "to hold."
interfirm (English): Between firms
Ancestry of “interfirm”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | English | inter | To bury in a grave; To confine, as in a prison |
| 2 | Middle English | enteren | — |
| 3 | French | entrer | to enter |
| 4 | Middle French | entrer | to enter |
| 5 | Old French | entrer | to enter |
| 6 | Latin | intrō | — |
| 7 | Latin | intra | within; inside; during; less than |
| 8 | Latin | interus | — |
| 9 | Proto-Indo-European | h₁énteros | inside, within |
| 10 | Proto-Indo-European | -teros | Contrastive or oppositional adjectival suffix |