"Filled the bill" is an idiomatic expression that means to meet the requirements or serve a purpose. There are several synonyms for this phrase, such as "fit the bill," "suit the purpose," "meet the needs," "serve the function," and "fulfill the requirement." These phrases are commonly used when describing something or someone that perfectly matches the desired characteristics or expectations. Other similar idioms include "check all the boxes," "hit the spot," "satisfy the criteria," and "tick all the right boxes." These phrases can be used in a variety of contexts, such as describing a product or service that meets a customer's needs, an employee who meets the job's requirements, or a meal that satisfies one's hunger.