How many letters does the top answer for “wrote dr. slump” have?

The most common answer is toriyama (8 letters).

Crossword clue: wrote dr. slump

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

toriyama 8 letters wd-fact-v3

author of dr. slump 50% similar → toriyama

director of dr. slump 50% similar → toriyama

wrote dr. phil 50% similar → mcgraw

wrote dr. strangelove 50% similar → kubrick