Where does “gravoso” come from?

gravoso (Spanish) comes from Spanish -oso, from Old Spanish -oso, from Latin -osus, from Old Latin -osos, from Latin ont-to-s, from Latin -o-wont-to-s.

gravoso (Spanish): heavy; onerous

Definitions

heavy; onerous

Ancestry of “gravoso”, step by step

Step	Language	Word	Meaning
1	Spanish	-oso	-ous, -ful, -y
2	Old Spanish	-oso	—
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 Spanish -oso →Every word from Latin -osus →