The story
- Ancient Greek · borrowed fromταχύς“swift”
- English todaytachydidaxy
From Ancient Greek ταχύς (takhús, “swift”) and διδάσκω (didáskō, “I teach, educate”).
Words from the same roots
Ancient Greekταχύς all →
tachycardiaisotachtachyhydrite
Etymology from Wiktionary, CC BY-SA 4.0.