In-citation refers to a reference or citation that is included within a written work. In order to convey the opposite meaning or to describe the absence of an in-citation, one can use antonyms such as omission, exclusion, or disregard. Omission refers to the act of omitting or leaving something out, which could imply that an in-text citation was not included. Exclusion means to deliberately leave something out, or to not include it, which could also refer to the absence of an in-citation. Disregard means to ignore or take no notice of, which suggests that there was no attention paid to including an in-citation in the written work.