How many letters does the top answer for “free from admixture with noxious elements; clean” have?

The most common answer is uncontaminated (14 letters).

Crossword clue: free from admixture with noxious elements; clean

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

uncontaminated 14 letters wn-def

free from admixture with noxious elements; clean

unpolluted 10 letters wn-def

free from admixture with noxious elements; clean