X-out is a colloquial term that means to cross out or exclude something. There are many synonyms for this term that can be used to convey the same meaning. Some common synonyms for x-out include eliminate, erase, strike, cancel, delete, scratch, and black out. These words are often used in contexts such as editing, grading, or marking, where it's necessary to indicate that something has been removed or corrected. Additionally, some other informal synonyms for x-out include cut, ax, and chop, particularly when referring to ending a program or activity abruptly. Regardless of which term is used, each one emphasizes the importance of taking away or excluding something.