Machiavellianism is "the employment of cunning and duplicity in statecraft or in general conduct".
POLITICAL THEORY - Niccolò Machiavelli by The School of Life
The word comes from the Italian Renaissance diplomat and writer Niccolò Machiavelli, born in 1469, who wrote Il Principe, among other works.
The Italian Renaissance was the earliest manifestation of the general European Renaissance, a period of great cultural change and achievement that began in Italy during the 14th century and lasted until the 16th century, marking the transition between Medieval and Early Modern Europe.
Niccolò Machiavelli, or more formally Niccolò di Bernardo dei Machiavelli, was a Florentine Renaissance historian, politician, diplomat, philosopher, humanist, and writer.
Machiavellian Intelligence by 2b Sirius
In modern psychology, Machiavellianism is one of the dark triad personalities, characterized by a duplicitous interpersonal style, a cynical disregard for morality and a focus on self-interest and personal gain.
The dark triad is a subject in psychology that focuses on three personality traits: narcissism, Machiavellianism, and psychopathy.
Self-interest generally refers to a focus on the needs or desires of the self.