Interior - positioned in or appropriate for inside of a building; "an inside scene"; "inside decoration"; "an interior lavatory devoid of Home windows" 4. The adverb indoors must be applied to change the verb keep. Indoor is really an adjective and might be utilized in different ways, such as in indoor regions. https://indoormatting12233.therainblog.com/36535281/5-easy-facts-about-indoor-matting-described