There are several synonyms for the phrase "walking out." Some of these include leaving, departing, exiting, going away, withdrawing, and quitting. When we use the phrase "walking out" in a context, we usually mean leaving a location or situation abruptly and abruptly. The synonyms for this phrase can be used in various contexts and can have different meanings based on the situation. For instance, leaving a job could be referred to as "quitting" or "withdrawing." Similarly, separating from a romantic partner could be referred to as "departing" or "going away." Thus, selecting the appropriate synonym depends on the context and intended meaning.