Where does “interagreement” come from?

interagreement (English) comes from English agreement, from Middle English agrement, from Old French agrement, from Old French agreer, from Old French gré, from Latin grātum, from Latin grātus, from Proto-Italic grātos — to express approval; praise; to elevate.

interagreement (English): Agreement among each other

Definitions

  1. Agreement among each other

Ancestry of “interagreement”, step by step

interagreement traces back through two separate lines of ancestry.

via English agreement

StepLanguageWordMeaning
1EnglishagreementAn understanding between entities to follow a...
2Middle EnglishagrementAn understanding, agreement, or state of mutual...
3Old Frenchagrementagreement; accord
4Old Frenchagreerto please; to be pleasing to
5Old Frenchgrépleasure, goodwill; will; step
6Latingrātum
7Latingrātuspleasing, acceptable, agreeable, welcome
8Proto-Italicgrātos
9Proto-Indo-Europeangʷr̥Htóspraised
10Proto-Indo-EuropeangʷerH-to express approval; praise; to elevate

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
Every word from Proto-Indo-European gʷerH-