How many letters does the top answer for “author of the communist manifesto” have?

The most common answer is engels (6 letters).

Crossword clue: author of the communist manifesto

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

engels 6 letters wd-fact-v3

socialist who wrote the Communist Manifesto with Karl Marx in 1848 (1820-1895)

author of scum manifesto 50% similar → solanas

author of surrealist manifesto 50% similar → breton

wrote the communist manifesto 50% similar → engels