How many letters does the top answer for “moving with great haste” have?

The most common answer is hurrying (8 letters).

Crossword clue: moving with great haste

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

hurrying 8 letters wn-def

changing location rapidly

scurrying 9 letters wn-def

moving with great haste