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

Definitions

  1. Between firms

Ancestry of “interfirm”, step by step

interfirm traces back through two separate lines of ancestry.

via English inter

StepLanguageWordMeaning
1EnglishinterTo bury in a grave; To confine, as in a prison
2Middle Englishenteren
3Frenchentrerto enter
4Middle Frenchentrerto enter
5Old Frenchentrerto enter
6Latinintrōto enter, go into, come in, get in, penetrate
7Latinintrawithin; inside; during; less than
8Latininterus
9Proto-Indo-Europeanh₁énterosinside, within
10Proto-Indo-European-terosContrastive or oppositional adjectival suffix

via English firm

StepLanguageWordMeaning
1EnglishfirmA business partnership; the name under which it...
2Middle EnglishfermeA lease; the renting of land
3Old Frenchfermelease; the land leased; farm
4Medieval LatinfermaAlternative form of firma
5LatinFirmatax, tribute
6LatinFirmusstrong, powerful
7Proto-Italicfermos
8Proto-Indo-Europeandʰer-mo-sholding
9Proto-Indo-Europeandʰer-to support; to hold
Every word from Proto-Indo-European -teros