The word "uncanceled" means that something has not been terminated or withdrawn. Therefore, its antonyms would be words that suggest that something has been completed, annulled or terminated. Some of the antonyms for "uncanceled" include canceled, terminated, withdrawn, void, nullified, revoked, rescinded, abolished, and annulled. These words imply that there was a prior decision to cancel, terminate or withdraw something. They can be used in various contexts, such as in business, entertainment, travel, and legal matters. The appropriate antonym to use depends on the context and the intended meaning. In general, the use of these antonyms should provide a clear understanding of the situation at hand.