Definition of "exposer" [ex•pos•er]

• One who exposes. (noun)

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• "In 1876 a new "exposer" of Judaism appeared on the scene, a man with a stained past, Hippolyte Lutostanski."
• "- Whittaker Chambers (born Vivian Jay Chambers in 1901, Soviet agent turned right wing Christian activist, and exposer of Soviet agent, trusted aide to FDR, and UN co-architect, Alger Hiss), 1952 0"
• "It only takes a little exposer to really mess you up."