Where does “ἀγαλλίασις” come from?

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

ἀγαλλίασις (Ancient Greek): great joy, exultation

Definitions

great joy, exultation

Ancestry of “ἀγαλλίασις”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	-σῐς	"suffix forming nouns"
2	Ancient Greek	-τις	retained after dentals
3	Proto-Indo-European	-tis	Derives abstract/action nouns from verb roots

Words derived from “ἀγαλλίασις”

αγαλλίαση

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