Focus on the pronunciation of outside
English definition of “outside”
/ˌɑʊtˈsɑɪd/, /ˈɑʊtˌsɑɪd/ prep, adj, adv [not gradable] (NOT PART OF SOMETHING)
› not within or part of something: I live just outside (of) Baltimore. Cars, movies, and radio linked small towns to the outside world. outside of › Outside of means other than or except for: There are few cities outside of Boston, New York, and Chicago where baseball fans get this excited.