How many letters does the top answer for “act or move at high speed” have?

The most common answer is festinate (9 letters).

Crossword clue: act or move at high speed

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

festinate 9 letters wn-def

act or move at high speed

hasten 6 letters wn-def

act or move at high speed

move headlong at high speed 60% similar → career