[{"Bold_text": "adverb", "List Items": ["up the stairs; to or on an upper floor.", "Informal.in the mind:to be a little weak upstairs.", "to or at a higher level of authority:You may have to take the matter upstairs.", "Military Slang.at or to a higher level in the air."]}, {"Bold_text": "adjective", "List Items": ["Alsoup?stair?.of, relating to, or situated on an upper floor:an upstairs window;an upstairs apartment."]}, {"Bold_text": "noun", "List Items": ["(usually used with a singular verb)an upper story or stories; the part of a building or house that is above the ground floor:The upstairs of this house is entirely rented.", "a higher command or level of authority:We can't take action till we have approval from upstairs."]}]