Deception and trickery:
* Fraud: Intentional deception for personal gain.
* Duplicity: Deceitfulness; double-dealing.
* Machination: Cunning schemes or plots.
* Misrepresentation: Giving a false or misleading account of something.
* Guile: Cunning and slyness in achieving one's aims.
* Slyness: The quality of being cunning or deceptive.
* Trickery: The use of deceit or cunning to achieve a goal.
* Craftiness: Skill in using deception or cunning.
* Subterfuge: Deceitful tactics used to achieve a goal.
* Casuistry: The use of clever but unsound reasoning to justify actions.
Dishonest practices:
* Sharp practice: Dishonest or unethical business practices.
* Foul play: Unfair or dishonest actions, especially in a competition or game.
* Sharp dealing: Dealing in a way that is clever but may be dishonest.
* Shenanigans: Dishonest or questionable activities.
Words emphasizing cunning:
* Artful: Skillful in using deception or cunning.
* Astute: Having or showing an ability to accurately assess situations or people.
* Wily: Cunning and deceitful.
* Shrewd: Having or showing sharp powers of judgment.
* Foxy: Cunning and sly, like a fox.
More general terms:
* Dishonesty: Lack of honesty.
* Deception: The act of misleading someone.
* Manipulation: The act of controlling or influencing someone in a subtle way.
* Immorality: Lack of moral principles.
* Unfairness: Lack of justice or equality.
The best word to use will depend on the specific context and the nuances of the situation you are describing.