How many letters does the top answer for “a short passage added at the end of a literary work” have?

The most common answer is epilog (6 letters).

Crossword clue: a short passage added at the end of a literary work

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

epilog 6 letters wn-def

a short passage added at the end of a literary work

epilogue 8 letters wn-def

a short passage added at the end of a literary work