"Were customer" refers to someone who used to be a customer of a particular business or service but no longer is. There are several synonyms that can be used interchangeably with this phrase, such as "former customer", "ex-customer", "past patron", or "previous client". These terms can be useful in various contexts, including customer feedback, marketing strategies, and business analyses. Knowing the synonyms for "were customer" can help businesses create better customer retention programs, identify reasons for losing customers, and tailor communication and service offerings to re-engage past customers. Ultimately, the goal is to turn "were customers" back into loyal ones.