Overshoot implies a result that was not planned or desired, often leading to a need for correction. The spacecraft overshot its intended orbit, causing mission control to recalculate.
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Measure of Excess
Overshoot often measures the extent by which something exceeded limits, in distance, time, or quantity. He overshot his estimation by two hours, arriving far too early.
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Negative Connotation
Overshoot generally has a negative connotation, suggesting error or miscalculation. The team overestimated their abilities and overshot the project deadline.