1out·side 
/ˌaʊtˈsaɪd, ˈaʊtˌsaɪd/ noun
plural out·sides /ˌaʊtˈsaɪd, ˈaʊtˌsaɪd/ noun 1 the outside : an area around or near something (such as a building)
▪ The house looks nice from the outside. 2 [count] : an outer side, edge, or surface of something — usually singular ▪ The door can be locked from the inside or outside. — often + of ▪ The outside of the building needs painting.
▪ The house looks nice from the outside.
at the outside
: at the most : at the greatest amount or limit
▪ The crowd numbered 10,000 at the outside. ▪ It took him an hour at the outside to finish. ▪ It costs, at the outside, $20.
▪ The crowd numbered 10,000 at the outside. ▪ It took him an hour at the outside to finish. ▪ It costs, at the outside, $20.
on the outside 1 : on the outer side, edge, or surface of something
▪ The number 22 car tried to pass the leader on the outside (of the track). 2 baseball : on the side of home plate farthest from the batter
▪ The next pitch was a fastball on the outside. 3 — used to describe someone's appearance ▪ I might seem calm on the outside, but I'm actually really nervous. 4 : not in prison
▪ He looked forward to life on the outside again.
▪ The number 22 car tried to pass the leader on the outside (of the track).
▪ The next pitch was a fastball on the outside.
▪ He looked forward to life on the outside again.
