The phrase "wide of mark" suggests a missed target or an inaccurate aim. The antonyms for this phrase can include "on target," "accurate," "precise," "bullseye," and "on the mark." These words signify a successful hit or an achievement of the exact aim. Additionally, related antonyms can include "narrowly focused," "close," "exact," and "pinpoint," which connote a high degree of precision in aiming or hitting a target. Using antonyms for "wide of mark" can be helpful to explore different perspectives and approaches to a task or goal, highlighting the importance of accuracy and precision in achieving success.