գաղափար (Old Armenian) comes from Ancient Greek καλοπόδιον, from Ancient Greek κᾱλόπους, from Ancient Greek πούς, from Proto-Indo-European pṓds, from Proto-Indo-European póds, from Proto-Indo-European ped- — to walk, to step; to stumble, to fall.
գաղափար (Old Armenian): model, form, pattern; idea