pure as the driven snow

• pure as driven snow
• pure as the driven (colloquial)

According to Gary Martin, the term refers to "snow that has blown into drifts and is untrodden and clean". He also notes records of the similar phrase "white as driven snow" since 1611.^[1]

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pure as the driven snow (not comparable)

1. (simile) Extremely pure; totally pure (typically "pure" in the sense of "virtuous").

• white as the driven snow