The phrase "serves up" refers to providing or delivering something, often food or a service. Its antonyms would be words that indicate the opposite, such as "withholds," "keeps back," or "denies." These terms suggest a lack of provision or delivery, with the implication that the recipient is left wanting or unfulfilled. Other antonyms might include "neglects," "ignores," or "disregards," which suggest a failure to provide for others' needs or care. Alternatively, words such as "receives," "accepts," or "acknowledges" could be seen as opposite in meaning, as they suggest a willingness to accept or take in what is being offered.