The word "over-shot" means to have gone too far or exceeded a target, but there are several antonyms that describe the opposite of this action. Some antonyms for "over-shot" include "under-shot," "missed," "fell short," "lacked," "failed to achieve," or "didn't reach." Each of these words describes a different type of failure to meet a goal or objective. "Under-shot" describes falling short of a target, while "missed" implies that the target was completely missed. "Failed to achieve" suggests that the goal was simply not reached, while "lacked" implies that the effort was not enough to reach the objective.