Definition of blacken verb from the Oxford Advanced American Dictionary



    Verb Forms present simple I / you / we / they blacken
    he / she / it blackens
    past simple blackened
    -ing form blackening
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  1. 1[transitive, intransitive] blacken (something) to make something black; to become black Their faces were blackened with soot. Smoke had blackened the walls. rows of blackened teeth
  2. 2[transitive] blacken someone's name/reputation/character to say unpleasant things that give people a bad opinion of someone He accused the newspaper of trying to blacken his name.
See the Oxford Advanced Learner's Dictionary entry: blacken