Mendacity (noun)

The quality or state of being mendacious; dishonesty; untruthfulness.

Origin:

From latin mendacitas, from mendax, meaning lying, false.

Examples:

1. The mendacity of the witnesses was apparent in their conflicting accounts of the event.
2. The politician's speech was filled with mendacity, as he lied about his track record.
3. The detective uncovered the mendacity in the suspect's alibi and arrested him for the crime.
4. The company's policy prohibited mendacity in the workplace, and employees caught lying were promptly fired.
5. The mendacity of the fraudster was finally exposed, and he was sentenced to several years in prison.