Deceit (noun)

1. The act of deliberately misleading or deceiving someone.
2. A dishonest or fraudulent act.
3. The quality of being deceptive or misleading.

Origin:

From middle english 'deceite', from old french 'deceit', from latin 'decipere' meaning 'to deceive'.

Examples:

1. The company was accused of deceit in its financial reporting.
2. She saw through his deceit and refused to be taken in.
3. He used deceit to get what he wanted.
4. The politician's statements were full of deceit and falsehoods.
5. The con artist relied on deceit to scam his victims.