Where does “boquiabierto” come from?

boquiabierto (Spanish) comes from Spanish abierto, from Old Spanish abierto, from Latin apertus, from Latin aperiō, from Proto-Indo-European h₂epó — off, away.

boquiabierto (Spanish): open-mouthed with the mouth open

Definitions

open-mouthed with the mouth open

Ancestry of “boquiabierto”, step by step

boquiabierto traces back through two separate lines of ancestry.

via Spanish abierto

Step	Language	Word	Meaning
1	Spanish	abierto	open, unlocked; open; open, open-minded
2	Old Spanish	abierto	—
3	Latin	apertus	opened, open, free; public; having been opened;...
4	Latin	aperiō	to uncover, make or lay bare, reveal, clear
5	Proto-Indo-European	h₂epó	off, away

via Spanish boca

Step	Language	Word	Meaning
1	Spanish	boca	mouth, oral cavity; entrance, opening; estuary
2	Old Spanish	boca	mouth
3	Latin	bucca	the lower part of the cheek; the mouth; c. 27 CE...

Every word from Proto-Indo-European h₂epó →