What is the origin of andragogy?
English andragogy is modeled upon pedagogy, which ultimately comes from Greek paidagōgía “the function of a paidagōgós,” by extension “education.” A paidagōgós, literally “child guide,” was a slave who walked a child to and from school. Paidagōgós is a compound formed from paid-, inflectional stem of paîs ”child,” and agōgós “guide,” a derivative of the verb ágein “to lead, take away, carry.” The combining form andr- of andragogy is one of the stems of the Greek noun anḗr (aner-, andr-) “man” (as opposed to a woman or child). Greek anḗr comes from Proto-Indo-European ner-, ǝner-, source of Sanskrit nár “man, human,” and the Latin proper name Nerō. According to Roman grammarians, nero among the Sabines, a rural people that lived northeast of Rome, meant fortis ac strenuus “brave and energetic.” In Celtic (Welsh) Proto-Indo-European ner- becomes ner “hero.” Andragogy entered English in the 20th century.