The phrase "most obviating" can be replaced with a variety of synonyms that convey similar meanings. Some possible alternatives include "most preventing," "most avoiding," "most eliminating," "most neutralizing," and "most countering." Each phrase suggests an action taken to overcome or remove a problem or obstacle. In all cases, the implication is that the action has been successful in achieving its goal. Depending on the context, one synonym may be more appropriate than another. For example, "most neutralizing" might be the best choice when referring to a chemical reaction, while "most avoiding" might be a better fit when discussing a potential conflict.