Where does “курьёзный” come from?

курьёзный (Russian) comes from French curieux, from Latin curiosus, from Latin -osus, from Old Latin -osos, from Latin ont-to-s, from Latin -o-wont-to-s.

курьёзный (Russian): entertaining; amusing

Definitions

entertaining; amusing

Ancestry of “курьёзный”, step by step

Step	Language	Word	Meaning
1	French	curieux	curious, inquisitive, intrigued, wondering;...
2	Latin	curiosus	Careful, diligent, thoughtful, devoted;...
3	Latin	-osus	-ose, -ous; full of, overly, prone to
4	Old Latin	-osos	accusative masculine plural of -ōsus
5	Latin	ont-to-s	—
6	Latin	-o-wont-to-s	—

Every word from Latin -o-wont-to-s →Every word from Latin -osus →Every word from Latin curiosus →