There are several synonyms for the phrase "goes to the wall for," which means to defend or support someone or something to the fullest extent. Some alternatives include "stands up for," "fights for," "champions," and "advocates for." These phrases carry a similar connotation of standing behind a person or idea, even in difficult or challenging circumstances. Other options include "throws their weight behind," "puts their neck on the line for," and "throws themselves into the fray for." All of these phrases imply a high level of commitment and dedication to a particular cause or individual.