Chasing away can be done in several ways and various synonyms are available to provide a suitable alternative. Some of the commonly used substitutes for chase away are "dismiss", "expel", "drive off", "push out", and "force out". Dismiss is typically used in situations where someone is preventing or disrupting something and needs to be removed immediately. Meanwhile, expel is commonly used in formal contexts like colleges for disciplinary action. Drive off and push out are interchangeably used to describe luring or pushing an animal away. Force out, on the other hand, is a forceful way of compelling someone or something to leave forcefully or willingly.