unmask - definition and synonyms

verb [transitive] mainly literary 

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/ʌnˈmɑːsk/
present tense
I/you/we/theyunmask
he/she/itunmasks
present participleunmasking
past tenseunmasked
past participleunmasked
  1. to discover the real truth about someone or something, especially when it is bad

    He was unmasked as a spy in 1987.