Duadic refers to a pair or a twofold nature. Synonyms for the word duadic include binary, dual, duplex, geminate, coupled, twofold, bifold, bipartite, double, and dyadic. These terms can be used interchangeably with duadic, depending on the context of the sentence or the subject matter being discussed. These synonyms can help convey a sense of duality or a two-part structure, which can be useful when describing mathematical concepts, interpersonal relationships, or abstract ideas. Exploring the nuances between these synonyms can add richness and depth to one's writing or speech, allowing for a more precise and nuanced exploration of the topic at hand.