The antonyms for the word "re citations" are "omissions" or "exclusions". While "re citations" refers to the act of citing sources again, either for emphasis or correction, omissions and exclusions represent the opposite action of leaving out certain information or failing to cite a source altogether. Omissions can occur intentionally or unintentionally, but they can create significant problems in academic or professional settings by rendering the information incomplete or biased. Therefore, it is crucial to ensure that all relevant sources are appropriately cited and included to enhance the clarity, credibility, and reliability of the information presented.