How many letters does the top answer for “a mental state characterized by a lack of clear and orderly thought and behavior” have?

The most common answer is confusedness (12 letters).

Crossword clue: a mental state characterized by a lack of clear and orderly thought and behavior

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

confusedness 12 letters wn-def

a mental state characterized by a lack of clear and orderly thought and behavior

disarray 8 letters wn-def

a mental state characterized by a lack of clear and orderly thought and behavior