Where does “-ouste” come from?

-ouste (Middle English) comes from Old French -ouseté, from Latin -ositas.

Ancestry of “-ouste”, step by step

Step	Language	Word	Meaning
1	Old French	-ouseté	—
2	Latin	-ositas	—

Words derived from “-ouste”

Every word from Latin -ositas →

-ouste — Etymology, Origin & Word History | Etymology Explorer