What does the cryptic crossword clue "Dull epic novel is extremely clear (8)" mean?

The definition is "clear". The wordplay uses an anagram. anagram of DULL + EPIC = PELLUCID; definition: "clear" The answer is PELLUCID.

Dull epic novel is extremely clear (8)

Times Cryptic #29181 | 19 Across | 2025-03-19 flower