The short answer
Envy and jealousy describe related but different feelings. Envy is wanting something another person has, such as their success, looks, or possessions. Jealousy is the fear of losing something you already possess, often a relationship, to a rival. Envy involves two people; jealousy typically involves three: you, what you have, and whoever threatens to take it away.
What envy means
Envy is a two-person emotion. You see something desirable that belongs to someone else and wish you had it too. Correct: 'He envied his coworker's ability to stay calm during the presentation.' Envy can range from mild admiration to resentment, but it always starts with comparing yourself to another person and coming up short in the comparison.
The adjective form is envious, as in 'She was envious of her friend's new apartment.' English also has the phrase 'green with envy,' used to describe someone visibly affected by wanting what another person has. Envy does not require a threat to a relationship; it can arise even toward a stranger whose life simply looks appealing from the outside.
What jealousy means
Jealousy usually involves three parties: you, something or someone you value, and a perceived rival. Correct: 'She felt jealous when her best friend spent the whole party talking to someone else.' Jealousy is protective in nature; it reacts to a threat against a relationship, position, or possession you already hold, rather than to something you simply lack.
The adjective form is jealous, as in 'He grew jealous whenever his sister praised his coworker's work.' Jealousy often shows up in romantic relationships, friendships, and family dynamics, wherever attention or loyalty feels divided. Unlike envy, jealousy assumes you already have something worth protecting, which is why it so often comes paired with worry or suspicion.
Envy or jealousy in a sentence
Because the feelings overlap in everyday speech, people often swap the words. Not: 'He was jealous of his neighbor's new car,' when no relationship is being threatened; the accurate word is envious, since he simply wants a car like it. Correct: 'She grew jealous when her brother got more attention from their parents,' since a relationship, not an object, is at stake.
Remember it
Picture envy as looking over the fence at someone else's yard, wishing it were yours. Picture jealousy as guarding your own yard because someone else wants in. If nothing of yours is at risk, you are envious; if you fear losing something you already have, you are jealous.
Why the difference matters
Choosing the right word makes your writing more precise and your feelings easier for others to understand. Saying you are envious of a friend's vacation signals plain admiration, while saying you are jealous of the same trip might wrongly suggest you feel threatened or left out. In everyday conversation, people blend the two words constantly, but in careful writing, the distinction sharpens both the emotion and the meaning.
Frequently asked questions
Is it correct to say jealous of someone's success?
Strictly speaking, envious is more accurate, since success is something you lack rather than something you fear losing. In casual speech, though, jealous is widely used for both meanings.
Can you feel envy and jealousy at the same time?
Yes. For example, you might envy a coworker's promotion while also feeling jealous that your manager now gives them more attention than you.
Is jealousy always a negative emotion?
Not necessarily. Mild jealousy can signal that a relationship matters to you, though it becomes harmful when it leads to controlling or suspicious behavior.
Try it with a real collection
Explore academic vocabulary or print a Frayer model to put these ideas into practice.