Where does “ἀρχιδιδάσκαλος” come from?

ἀρχιδιδάσκαλος (Ancient Greek) comes from Ancient Greek διδάσκαλος, from Ancient Greek διδάσκω, from Ancient Greek -σκω, from Proto-Indo-European -sḱéti — Forms durative or iterative imperfective verbs...

Ancestry of “ἀρχιδιδάσκαλος”, step by step

StepLanguageWordMeaning
1Ancient Greekδιδάσκαλοςteacher, master, director
2Ancient GreekδιδάσκωI teach, instruct, train
3Ancient Greek-σκωPrimitive suffix used to form present-tense...
4Proto-Indo-European-sḱétiForms durative or iterative imperfective verbs...
Every word from Proto-Indo-European -sḱétiEvery word from Ancient Greek -σκωEvery word from Ancient Greek διδάσκω