Triplicity is a noun that refers to the state or quality of being triple or threefold in nature. It can be challenging to find synonyms for this term as it is relatively uncommon and has a specific meaning. However, some alternatives include the words triple aspect, trinity, and triad. These words all refer to three elements working together to form a cohesive unit. Additionally, terms like triplicate, threesome, and trifecta could also be used to convey similar ideas. Overall, while triplicity may not be the most widely-used term, there are a few options for those looking for synonyms that convey a similar meaning.