inaccuracy

/ɪnˈækjərəsi/
noun
  1. A mistake or lack of correctness; something that is not accurate.
    • There is a small inaccuracy in the measurement of the room.
    • The report contained several inaccuracies about the company's finances.
    • Historians found an inaccuracy in the old map's coastline.
  2. The quality or state of being incorrect or imprecise.
    • The inaccuracy of the weather forecast caused many people to cancel their plans.
    • We need to reduce the inaccuracy of our data collection methods.
    • The inaccuracy of his memory became clear when he told the story differently each time.