Interior - situated inside of or appropriate for within a constructing; "an inside scene"; "inside decoration"; "an interior bathroom without having windows" four. The adverb indoors needs to be utilized to change the verb continue to be. Indoor is surely an adjective and might be employed otherwise, for instance in indoor areas. https://indoormats79900.howeweb.com/38553699/the-ultimate-guide-to-indoor-door-mats