What is another word for exchanged letters?
Pronunciation: [ɛkst͡ʃˈe͡ɪnd͡ʒd lˈɛtəz] (IPA) 
The phrase "exchanged letters" can be replaced with multiple synonyms. One of the alternatives could be "corresponded," which implies a mutual exchange of written communication between two or more parties. Another possible synonym is "communicated in writing," which emphasizes the medium of communication being solely written words. "Pen pal" also denotes a long-term, written correspondence between individuals, typically living in different parts of the world. If the communication was between two lovers, the phrase "sent love letters" may be appropriate. Finally, for a more formal or professional exchange of letters, "exchanged correspondence" could be used.
