Where does “interactionist” come from?

Interactionist derives from English interaction, from Latin inter- and English action, from Latin actus, the past participle of agere meaning "to do" or "to drive."

interactionist (English): One who studies interactionism

Definitions

  1. One who studies interactionism

Ancestry of “interactionist”, step by step

interactionist traces back through two separate lines of ancestry.

via English ist

StepLanguageWordMeaning
1EnglishistA practitioner or supporter of an ism
2English-istAdded to words to form nouns denoting
3Old French-iste
4Latin-ista-ist; one who practises or believes
5Ancient Greek-ιστήςAlternative form of -τής; -ist
6Ancient Greek-τήςAppended to verbs to form agent nouns
7Proto-Hellenic-tās

via English interaction

StepLanguageWordMeaning
1EnglishinteractionThe situation or occurrence in which two or more...
2Latininterbetween, among; during, while
3Proto-Indo-Europeanh₁entérbetween
4Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Hellenic -tās