Antonyms for "over productions" can include underproduction, scarcity, shortage, and deficiency. Underproduction refers to a lack of production or insufficient amounts being made. Scarcity indicates a scarcity of resources or goods, usually resulting in limited supply. Shortage means a shortfall or the inability to meet demand. Lastly, deficiency implies a lack of something that is needed, such as a deficiency in experience or resources. In contrast to overproduction, these antonyms convey the idea of a shortage or inadequate levels of production, which can lead to economic, financial, and other types of problems.