How many letters does the top answer for “an impulsive scatterbrained manner” have?

The most common answer is giddiness (9 letters).

Crossword clue: an impulsive scatterbrained manner

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

giddiness 9 letters wn-def

an impulsive scatterbrained manner

silliness 9 letters wn-def

an impulsive scatterbrained manner

in an impulsive manner. 67% similar → impulsively