Definify.com
Webster 1913 Edition
Upside
Up′sideˊ
,Noun.
1.
The upper side; the part that is uppermost.
To be upsides with
, to be even with.
[Prov. Eng. & Scot.]
Sir W. Scott.
T. Hughes.
– Upside down
. [Perhaps a corruption of OE.
up so down
, literally, up as down.] With the upper part undermost; hence, in confusion; in complete disorder; topsy-turvy.
Shak.
These that have turned the world
upside down
are come hither also. Acts xvii. 6.