Definition of erroneous adjective from the Oxford Advanced American Dictionary

  

erroneous

 adjective
adjective
NAmE//ɪˈroʊniəs//
 
(formal)
 
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not correct; based on wrong information erroneous conclusions/assumptions He seems to be under the erroneous impression that she is in love with him.
 
adverb The bank erroneously transferred the money to her account.
See the Oxford Advanced Learner's Dictionary entry: erroneous