h₃erbʰ-₂

“to turn, change, transfer”

Widely acceptedchangelabor

Source of Latin orbus, English orphan, robot (via Slavic)

Root for turning over/changing, yielding Latin orbus and English orphan, and Slavic robotъ (work).‍‍‌‌‍‍‌‌‌‌‌‌‌‍‌‍‌‌‍‍‌‍‍‌‌‍‍‍‍‌‍‍

h₃ep-“to work, produce”h₂ep-er-“work, labor, effort”h₃erp-“to turn, change sides”h₁werg-“to do, work, make”h₂werg-“to do, to work, to make”h₁werg-mn̥“work, deed, product”ḱerh₂-sko-“to begin to grow, increase”ḱeyd-“to fall, happen, befall”