More approximating means to approach or become more similar to something. The antonyms for this phrase can include words like diverging, departing, distancing, or deviating. If something is diverging, it means it is moving away from the intended target or commonality. Departing refers to moving away from something or taking a different path. Distancing means to put space or distance between two objects, while deviating means to move away from the standard or planned course. Therefore, if something is not more approximating, it is likely moving away from something else, and the antonyms provide an accurate representation of that movement.