Where does “costosamente” come from?

costosamente (Spanish) comes from Spanish costoso, 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.

costosamente (Spanish): costly, expensively, extravagantly

Definitions

costly, expensively, extravagantly

Ancestry of “costosamente”, step by step

Step	Language	Word	Meaning
1	Spanish	costoso	costly, expensive
2	Spanish	-oso	-ous, -ful, -y
3	Old Spanish	-oso	—
4	Latin	-osus	-ose, -ous; full of, overly, prone to
5	Old Latin	-osos	accusative masculine plural of -ōsus
6	Latin	ont-to-s	—
7	Latin	-o-wont-to-s	—

Every word from Latin -o-wont-to-s →Every word from Spanish -oso →Every word from Latin -osus →