How many letters does the top answer for “into parts or pieces” have?

The most common answer is asunder (7 letters).

Crossword clue: into parts or pieces

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

asunder 7 letters wn-def

into parts or pieces

separated into parts or pieces 67% similar → divided

a part of a part 50% similar → subpart

the second part in a concerted piece. 50% similar → secondo