also upside-down
1.
If something has been moved ~, it has been turned round so that the part that is usually lowest is above the part that is usually highest.
The painting was hung ~...
Salter held the bag by the corners and shook it ~.
ADV: ADV after v, n ADV
•
Upside down is also an adjective.
His eyes were open and everything he saw was ~...
Tony had an upside-down map of Britain on his wall.
ADJ
2.
to turn something ~: see turn