Where does “-sis” come from?

-sis (English) comes from Ancient Greek -σῐς, from Ancient Greek -τις, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

-sis (English): forming nouns of action or process; forming nouns...

Definitions

  1. forming nouns of action or process; forming nouns...

Ancestry of “-sis”, step by step

StepLanguageWordMeaning
1Ancient Greek-σῐς"suffix forming nouns"
2Ancient Greek-τιςretained after dentals
3Proto-Indo-European-tisDerives abstract/action nouns from verb roots

Words derived from “-sis”

Every word from Proto-Indo-European -tis →Every word from Ancient Greek -σῐς →Every word from Ancient Greek -τις →