the.com/empty
The fullness of absence — a container's confession that it has nothing left to offer.
means Containing nothing, or having had its contents removed, so that no space is occupied.
from From Old English aemettig, meaning at leisure or unoccupied — the word for free time became the word for free space, idleness emptied into nothingness.
Surprise rootOriginally meant having spare time, not zero contents.
Physics quibbleTrue vacuum is impossible; empty space still hums.
Silent letterThe p sneaked in by analogy, unetymologically.