Where does “interest-free” come from?

interest-free (English) comes from English interest, from Old French interest, from French intérêt, from Medieval Latin interesse, from Latin interesse, from Latin esse, from Ancient Greek οὐσία, from Ancient Greek εἰμί — to be.

interest-free (English): Not charging interest; not subject to interest...

Definitions

  1. Not charging interest; not subject to interest...

Ancestry of “interest-free”, step by step

interest-free traces back through two separate lines of ancestry.

via English interest

StepLanguageWordMeaning
1EnglishinterestThe price paid for obtaining, or price received...
2Old Frenchinterest
3Frenchintérêtinterest; point
4Medieval Latininteressepresent active infinitive of intersum; to...
5Latininteressepresent active infinitive of intersum; to...
6Latinessepresent infinitive of sum; state, condition;...
7Ancient Greekοὐσίαthat which is one's own, one's substance,...
8Ancient GreekεἰμίTo be, exist; live; To be; it is possible
9Proto-Hellenicehmito be
10Proto-Indo-Europeanh₁ésmifirst-person singular present indicative of...
11Proto-Indo-Europeanh₁ēs-to be

via English Free

StepLanguageWordMeaning
1EnglishFreeUnconstrained
2EnglishfallerOne who falls; A fruit that falls from the tree,...
3English-erA person or thing that does an action indicated...
4Middle English-eragentive suffix; agent noun suffix
5Old French-erAlternative form of -ier, verbal suffix;...
6Latin-ārefirst conjugation
7Proto-Italic-āōForms primarily denominative verbs
8Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
9Proto-Indo-European-yétiCreates intransitive, often deponent,...
10Proto-Indo-Europeanyé-
11Chichewaiyehe, she
Every word from Proto-Indo-European h₁ēs-Every word from Proto-Indo-European h₁ésmiEvery word from Proto-Hellenic ehmi