The phrase "gone through" can mean to have experienced or endured something, to have checked or examined something thoroughly, or to have used up or completed something. Synonyms for this phrase, depending on the context, might include "undergone," "survived," "endured," "persevered," "inspected," "analyzed," "evaluated," "verified," "approved," "checked over," "completed," "finished," "concluded," "exhausted," or "consumed." These alternatives can help to inject variety and nuance into your writing, preventing repetitive or dull phrasing. It's important to consider the specific meaning and connotations of each alternative to ensure that the desired emphasis and tone are maintained.