The phrase "soon after" is often used to indicate that an event occurred shortly after another. There are several synonyms for this phrase that can be used to add variety and precision to a sentence. Some of these synonyms include "immediately following," "shortly thereafter," "in the wake of," "in the aftermath of," and "subsequently." Each of these phrases carries a slightly different connotation and can be used in different contexts to add nuance and clarity to a sentence. Using synonyms in your writing can help you avoid repetition and create a more engaging and dynamic text.