noun
the action or practice of deceiving someone by concealing or misrepresenting the truth
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The businessman was caught in a web of deceit after it was discovered he had been embezzling funds.
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I can't believe she lied to her friend like that, what a deceitful move!
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Don't trust him, he's full of deceit and will stab you in the back.
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The deceitful whispers of doubt clouded her judgement and led her astray.