[{"Bold_text": "noun", "List Items": ["a check to progress; a reverse or defeat:The new law was a setback.", "Architecture.a recession of the upper part of a building from the building line, as to lighten the structure or to permit a desired amount of light and air to reach ground level at the foot of the building.", "an act or instance of setting back:A nightly setback of your home thermostats can save a great deal of fuel.", "Also a downward temperature adjustment of a thermostat, especially performed automatically, as by a timer."]}]