How many letters does the top answer for “the operation or work of cutting grass and curing it for hay.” have?

The most common answer is haymaking (9 letters).

Crossword clue: the operation or work of cutting grass and curing it for hay.

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

haymaking 9 letters web-def

cutting grass and curing it to make hay

cutting grass and curing it to make hay 57% similar → haymaking