How many letters does the top answer for “intelligence manifested by being astute (as in business dealings)” have?

The most common answer is perspicaciousness (17 letters).

Crossword clue: intelligence manifested by being astute (as in business dealings)

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

perspicaciousness 17 letters wn-def

intelligence manifested by being astute (as in business dealings)

shrewdness 10 letters wn-def

intelligence manifested by being astute (as in business dealings)