The word exteriorities refers to the external or outward aspects of something, but what are its antonyms? Antonyms of exteriorities can be the internal, interior, or inner aspects of something. For example, if we talk about the exteriorities of a building, the antonyms could be the interior design, the structure's inner workings, the building's internal systems, or its interior decoration. Similarly, if we talk about the exteriorities of a person, their antonyms could be their inner thoughts, emotions, or personality traits. Thus, the antonyms of exteriorities depend on the subject being discussed, but they generally refer to the opposite, internal qualities of something.