The word stems from the French jalousie, formed from jaloux (jealous), and further from Low Latin zelosus (full of zeal), in turn from the Greek word ζήλος (zēlos), sometimes "jealousy", but more often in a positive sense … See more

Scientific definitions
People do not express jealousy through a single emotion or a single behavior. They instead express jealousy through diverse emotions and … See more

Sexual jealousy may be triggered when a person's partner displays sexual interest in another person. The feeling of jealousy may be just as powerful if one partner suspects the other … See more

A study by researchers at the University of California, San Diego, replicated jealousy studies done on humans on canines. They reported, in a paper published in PLOS ONE in 2014, that a … See more

Romantic jealousy arises as a result of romantic interest.
It is defined as “a complex of thoughts, feelings, and actions that follow threats to self-esteem and/or threats to the existence or quality of the relationship when those threats are … See more

According to Rebecca L. Ammon in The Osprey Journal of Ideas and Inquiry at UNF Digital Commons (2004), the Parental Investment Model based on parental investment theory posits that more men than women ratify sex differences in jealousy. In … See more

In fiction, film, and art
Artistic depictions of jealousy occur in fiction, films, and other art forms such as painting and sculpture. Jealousy is a common theme in … See more