There are plenty of synonyms for the term "household names," which describe individuals, brands, or entities that have achieved widespread recognition and popularity. One such synonym is "celebrity," which often refers to famous actors, musicians, athletes, and other public figures who are widely known and admired. Other synonyms include "legend," "icon," "superstar," "personality," and "brand name." Additionally, phrases like "well-known," "familiar," and "recognized" can also be used in place of "household name" to describe something or someone that has become widely known and recognized. Ultimately, the use of these synonyms depends on the context and the extent to which recognition and popularity have been achieved.