How many letters does the top answer for “a predisposition in favor of something” have?

The most common answer is predilection (12 letters).

Crossword clue: a predisposition in favor of something

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

predilection 12 letters wn-def

a predisposition in favor of something

preference 10 letters wn-def

a predisposition in favor of something

a predisposition to like something 50% similar → fondness