How many letters does the top answer for “(of tempo) moderately slow” have?

The most common answer is andante (7 letters).

Crossword clue: (of tempo) moderately slow

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

andante 7 letters wn-def

a musical composition or musical passage to be performed moderately slow

in a moderately quick tempo 50% similar → allegretto

(of tempo) moderately fast 50% similar → andantino

(of tempo) very slow 50% similar → lentissimo