Q: You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
Category: LITERARY TERMS 
Clue: It's the 5-syllable adjective for a novel, such as "Clarissa", that's written in the form of letters
A:
epistolary