When it comes to describing varying abilities, there are several synonyms for the phrase "in capacities." Some of these include "in abilities," "in skills," "in capabilities," and "in aptitudes." These words can be used to convey a range of meanings, depending on the context of the sentence. For instance, "in abilities" might be used to describe a person's general talents, while "in skills" might refer to specific areas of expertise, such as technical knowledge or language proficiency. Similarly, "in capabilities" might indicate a person's potential or aptitude for learning, while "in aptitudes" could describe natural inclinations or talents. Regardless of the word choice, these synonyms can help to add nuance and specificity to one's language.