Most presaging refers to something that is highly predictive or indicative of a particular outcome. The antonyms for this word could be anything that is not predictive, indicating, or foretelling. For instance, unprepossessing, unremarkable, unimpressive, or uncompelling can be antonyms for most presaging. These words imply that something lacks the ability to predict or indicate a future event. Similarly, the opposite of most presaging could be unpredictable, indeterminate, or uncertain. These words suggest that something cannot be relied upon to tell future events. Overall, the antonyms for most presaging emphasize the absence of prediction, indication, or anticipation.