How many letters does the top answer for “a neutral achromatic color midway between white and black” have?

The most common answer is gray (4 letters).

Crossword clue: a neutral achromatic color midway between white and black

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

gray 4 letters wn-def

a neutral achromatic color midway between white and black

grayness 8 letters wn-def

a neutral achromatic color midway between white and black

greyness 8 letters wn-def

a neutral achromatic color midway between white and black