Definition of chameleon noun from the Oxford Advanced American Dictionary

     

    chameleon

     noun
    noun
    NAmE//kəˈmilyən//
     
     
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  1. 1a small lizard (= a type of reptile ) that can change color according to its surroundings
  2. 2(often disapproving) a person who changes their behavior or opinions according to the situation a social/political chameleon
See the Oxford Advanced Learner's Dictionary entry: chameleon