1. removes a mask from someone or something
2. reveals the true nature or identity of someone or something that was hidden or disguised

Examples

• The detective unmasks the criminal at the end of the story.
• She unmasks her face after the masquerade ball.
• The investigation unmasks corruption in the government.
• The journalist unmasks the company’s illegal practices.
• He unmasks his true feelings during the conversation.
• The documentary unmasks the truth behind the scandal.
• The hero unmasks the villain’s evil plan.