The antonyms for "most over-and-above" include "under," "below," "less than," "not enough," "insufficient," "inadequate," and "deficient." These words convey the opposite meaning of excess or surplus, and suggest a lack or shortage of something. For instance, if one says, "We received less than the expected amount," it implies that the quantity is below the target level. Similarly, when someone says, "The allocated resources are insufficient to complete the task," it indicates that there are not enough resources to accomplish the goal. Therefore, by using appropriate antonyms, one can accurately express a range of concepts related to abundance or scarcity in different contexts.