1. A fundamental biological or psychological urge or instinct, such as hunger, thirst, or sexual desire, that is innate rather than learned
The primitive drive for survival motivates all living organisms.
O impulso primitivo de sobrevivência motiva todos os organismos vivos.
2. In psychology, a basic motivational force rooted in evolutionary biology that compels behavior toward fulfilling essential needs
Sigmund Freud theorized that primitive drives underlie much of human behavior.
Sigmund Freud teorizou que impulsos primitivos subjazem grande parte do comportamento humano.