There are various synonyms for the word "affianced persons" such as engaged couple, betrothed, fiance/fiancee, intended, pledged, promised, and promised one. Each of these synonyms denotes the mutual promise of marriage between two people. The term "engaged couple" is the most common and straightforward synonym for affianced persons. "Betrothed" and "fiance/fiancee" are more formal options that connote a sense of commitment. "Intended" is another commonly used synonym, while "pledged" and "promised" depict a sense of loyalty and devotion. In brief, these synonyms effectively convey the same message and allow one to tailor their language to fit the context of their writing or speech.