纤尘不染
xiān​chén​bù​rǎn

spotlessly clean

xiān​chén​bù​rǎn spotlessly clean
  1. 纤尘 纖塵 xiān​chén
    fine dust
    a tiny speck of dust; extremely fine dust
  2. 不 bù adverb
    not
    Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
  3. 染 rǎn verb
    to soil
    to soil; to pollute; to contaminate

xiān​chén​bù​rǎn untainted
  1. 纤尘 纖塵 xiān​chén
    fine dust
    a tiny speck of dust; extremely fine dust
  2. 不 bù adverb
    not
    Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
  3. 染 rǎn verbnoun
    to contract; to acquire
    to catch (a disease); to contract; to acquire (a bad habit); to be infected or influenced by