setback

باللغة العربية: نَكْسَة

1. An obstacle, delay, disadvantage, or blow (an adverse event which slows down, or prevents progress towards a desired outcome). · After some initial setbacks, the expedition went safely on its way.
2. Any adverse event, defeat, or impediment of progress.
3. The required distance between a structure and a road. (US)
4. A step-like recession in a wall. · Setbacks were initially used for structural reasons, but now are often mandated by land use codes.
5. An offset to the temperature setting of a thermostat to cover a period when more or less heating is required than usual.

الجمع setbacks