upside down
Concise Oxford English Dictionary © 2008 Oxford University Press:
upside down
▶adverb & adjective
- 1 with the upper part where the lower part should be.
- 2 in or into total disorder.
– origin ME: orig. up so down, perh. in the sense ‘up as if down’.
'upside down' also found in these Oxford entries:
awkward
- handstand
- invert
- overturn
- resupinate
- sloth
- sloth bear
- tarte Tatin
- tête-bêche
- topsy-turvy
- turtle
- upend
- upside-down cake
- upturn
- water drum
- Y-fronts
