Outside
/ˌaʊtˈsaɪd/noun
The outer side or external part of something; the exterior or area beyond a boundary.
Did you know?Its core is plain Old English geometry: *ūt* (“out”) + *sīdan* (“side”), so the word is basically a boundary marker for everything beyond the wall, the door, or the self.
Etymological Timeline
Old English
OE
ūte sīde
“at the outer side; on the outside”
Middle English
ME
outeside
“the exterior part; the outer surface or side”
15th Century
English
outside
“the outer side or exterior”
Modern English
English
outside
“the exterior, outward part, or area beyond a boundary”