How many letters does the top answer for “philosopher philosopher” have?

The most common answer is lipps (5 letters).

Crossword clue: philosopher philosopher

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

lipps 5 letters wd-fact-v3

aesthetics philosopher 50% similar → cohen, foot, gadamer

alchemy philosopher 50% similar → helmont

alchimowicz philosopher 50% similar → hayyan

algebra philosopher 50% similar → dedekind, grassmann

anatomy philosopher 50% similar → haller, steno

anthropology philosopher 50% similar → boas, feuerbach, huizinga

antisemitism philosopher 50% similar → chamberlain

aqidah philosopher 50% similar → hanbal