The term "over abundant" refers to something that is excessively plentiful or abundant. Therefore, its antonyms would describe a lack or shortage of something. Some antonyms for "over abundant" include scarce, deficient, insufficient, inadequate, meager, and wanting. These words suggest a limited amount of what is being referred to, whether it is resources, opportunities, or goods. They imply that there is not enough to meet the needs or demands of a particular situation or context. In contrast to over abundance, these antonyms indicate a condition of scarcity or inadequacy, requiring careful management, allocation, and prioritization.