Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun epistle

2 senses of epistle

Sense 1
epistle -- (a specially long, formal letter)
       => letter, missive -- (a written message addressed to a person or organization; "mailed an indignant letter to the editor")

Sense 2
Epistle -- (a book of the New Testament written in the form of a letter from an Apostle)
       => book -- (a major division of a long written composition; "the book of Isaiah")