There are various synonyms for the phrase "walk out" that can convey a similar meaning. "Leave suddenly," "exit abruptly," "storm out," and "bolt" all suggest a sudden and unexpected departure. "Abandon," "forsake," and "dessert" add the connotation of leaving behind someone or something that was once important. "Quit," "resign," and "give notice" imply a more formal departure, often from a job. "Depart," "go away," and "move on" can also be used as synonyms for "walk out," but they tend to lack the emotional charge of phrases like "storm out" or "bolt.