The opposite of "over reached" can be simply put as "under reached" or "fell short". These words convey the idea of not being able to reach a goal or objective, or not achieving the desired outcome. Other antonyms for "over reached" could be "adequate", "sufficient", "achievable", "realistic", "moderate", "reasonable". These words suggest that a balanced and realistic approach is necessary to reach a goal, rather than overestimating one's abilities and pushing too hard. In summary, while "over reached" means exceeding one's limits, its antonyms imply the importance of setting attainable goals and reaching them effectively.