Home › Words › I › indoorsindoors/ɪnˈdɔːz/indoors means inside, into, or within a building.indoors is pronounced /ɪnˈdɔːz/.EtymologyFrom in + doors, originally two words, representing earlier within doors.advInside, into, or within a building.e.g.“We stayed indoors to avoid the brutal heat.”nounThe interior of a building; the space inside buildings generally.e.g.“I prefer the indoors to the outdoors.”Definitions & examples from Wiktionary (CC BY-SA 3.0).