The story
- Proto-Indo-European*gerbʰ-
- Proto-Hellenic*grə́pʰō
- Ancient Greekγρᾰ́φω (grắphō)
- Ancient Greekγραφή (graphḗ)
- English today-graphy
From French -graphie, inherited from Latin -graphia, borrowed from Ancient Greek -γραφία (-graphía), from γραφή (graphḗ, “writing, drawing, description”). By surface analysis, -graph + -y.
Etymology from Wiktionary, CC BY-SA 4.0.