Collude (verb)

1. To work together secretly, especially in order to do something illegal or dishonest.
2. To act in secret concert, especially to achieve an illegal or fraudulent end.

Origin:

Derived from the latin word "colludere" meaning "to play or act together".

Examples:

1. They colluded to fix prices and cheat customers.
2. The two companies were accused of colluding to monopolize the market.
3. The government accused the companies of colluding to evade taxes.
4. The employees colluded to embezzle funds from the company.
5. The politicians were accused of colluding to rig the election.