To extent of is a phrasal term used to express the limit of something or someone's ability, range or reach. There are various synonyms that can be used in place of to extent of depending on the context in which it is being used. Such synonyms include "to the degree of", "to the level of", "to the point of", "to the extent that", among others. Each of these synonyms tends to emphasize a different aspect of the term to extent of. Nonetheless, they all convey a sense of limitation beyond which something or someone cannot go. To extent of is a versatile phrase that can be substituted with any of its synonyms for better communication and clarity.