Machiavellianism:

Machiavellianism is a personality trait defined by manipulativeness through cunning tactics and deception to achieve goals, a calculated focus on self-interest for personal gain, and a cynical disregard for morality, often leading to deception and a desire to gain power. Machiavellians are often duplicitous in their relationships, hiding their true intentions and prioritizing their interests over the needs or feelings of others. Machiavellianism is one of the dark triad/tetrad personality traits, along with narcissism, psychopathy, and sadism. It’s thought to be caused by a genetic and environmental factors, with research showing a heritable component and overlap with genes influencing psychopathy. Machiavellianism is named after Niccolò Machiavelli, a 16th-century Italian diplomat, philosopher, and author, most famous for his book The Prince. The term reflectsthe ruthless political strategies he advocated.