Where does “furtivamente” come from?

furtivamente (Spanish) comes from Spanish furtivo, from Latin fūrtīvus, from Latin fūrtum, from Latin fūr, from Proto-Italic fōr, from Proto-Indo-European bʰṓr, from Proto-Indo-European bʰer- — to bear, carry.

furtivamente (Spanish): by stealth, furtively; clandestinely

Definitions

by stealth, furtively; clandestinely

Ancestry of “furtivamente”, step by step

Step	Language	Word	Meaning
1	Spanish	furtivo	furtive; stealthy; poacher-like
2	Latin	fūrtīvus	stolen
3	Latin	fūrtum	a theft, robbery
4	Latin	fūr	a thief
5	Proto-Italic	fōr	thief
6	Proto-Indo-European	bʰṓr	thief
7	Proto-Indo-European	bʰer-	to bear, carry

Every word from Proto-Indo-European bʰer- →Every word from Proto-Indo-European bʰṓr →Every word from Proto-Italic fōr →