What is the origin of the word jealousy?
The word jealousy originates from a Greek root meaning to boil or ferment, suggesting that this emotion is not a static state but a churning, active force within the human psyche. The term traveled through Low Latin as zelosus and French as jaloux, eventually entering English with a darker hue. While the original Greek zēlos implied a healthy zeal, the biblical language of zeal came to mean tolerating no unfaithfulness, transforming the emotion into a defensive mechanism against betrayal.