How many letters does the top answer for “a woman who works in a dairy” have?

The most common answer is dairymaid (9 letters).

Crossword clue: a woman who works in a dairy

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

dairymaid 9 letters wn-def

a woman who works in a dairy

milkmaid 8 letters wn-def

a woman who works in a dairy

a woman who attends to a dairy. 50% similar → dairywoman