The act by which somebody or something is unmasked.(noun)
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Use "unmasking" in a sentence
"The Avengers unmasking is even more ridiculous when you think about who he unmasked in front of."
"Now, thanks to the culture wars and the Internet, the game of ideological unmasking is one that more and more people are playing."
"The Russian nihilist Netchajeff made the idea of unmasking these timid revolutionary-minded persons the basis of a scheme of revolutionary agitation."