How many letters does the top answer for “make a parody of” have?

The most common answer is burlesque (9 letters).

Crossword clue: make a parody of

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

burlesque 9 letters wn-def

a composition that imitates or misrepresents somebody's style, usually in a humorous way

spoof 5 letters wn-def

a composition that imitates or misrepresents somebody's style, usually in a humorous way