There are several synonyms for the word "unsourced", which means lacking a reliable or credited origin. Some of these synonyms include "unverified", "unconfirmed", "uncorroborated", "unsubstantiated", "unsupported", "indefensible", "unfounded", "speculative", "rumored", "hearsay", and "questionable". Unsourced information can sometimes be misleading and inaccurate, which is why it is important to verify the credibility of sources. In academic writing, unsourced claims can result in plagiarism or academic misconduct, which can have severe consequences. Therefore, it is crucial to always attribute information to a trustworthy source and ensure that it has been properly verified.