The antonyms for the word "more delivering" are "less efficient," "less productive," and "underperforming." When something or someone is described as delivering less, it means they are not meeting the expected standards or are not performing to their full potential. In the context of business or work, being less efficient or productive can lead to missed deadlines, decreased quality, and loss of revenue. Therefore, it is important to identify and address factors that may be hindering productivity or efficiency, such as inadequate training or resources, inefficient processes, or lack of motivation. By addressing these issues, individuals and organizations can improve their performance and ultimately achieve better results.