The word 'uncataloged' refers to something that has not been recorded, listed or indexed. Antonyms for this word would refer to the opposite meaning. For example, 'cataloged' refers to something that has been recorded, listed or indexed. Other antonyms for uncataloged include 'categorized,' 'classifed', 'indexed,' 'systematized', 'organized' or 'arranged'. These words describe the process of putting something in order, making it easy to find, and identifying it as part of a particular set or category. Therefore, when something is unclassified, uncategorized, unsorted or unorganized, it is considered uncataloged.