Where does “arcano” come from?

arcano (Portuguese) comes from Latin arcānus, from Latin arca, from Latin arceo, from Proto-Italic arkeō, from Proto-Indo-European h₂erk- — to protect, guard, hold, lock.

arcano (Portuguese): arcane

Definitions

arcane

Ancestry of “arcano”, step by step

Step	Language	Word	Meaning
1	Latin	arcānus	hidden, secret, private, mysterious
2	Latin	arca	chest, box, coffer, safe; coffin; ark
3	Latin	arceo	I shut up, enclose; box in; I keep off, ward off;...
4	Proto-Italic	arkeō	to contain
5	Proto-Indo-European	h₂erk-	to protect, guard, hold, lock

Words derived from “arcano”

arcanamente

Every word from Proto-Indo-European h₂erk- →Every word from Proto-Italic arkeō →Every word from Latin arceo →