If someone has something, either an object or an attribute, that your character covets, they may show signs of envy. You can show envy through associated emotions and your characters' behaviours and expressions.
Compare themselves to others
A dismissive attitude
Downplay the achievements of others
Frustration or disbelief at others’ success
Show signs of longing or desire
Show grudging admiration
Exhibit copycat behaviour
Show signs of low self-esteem
Be excessively competitive
Mock and belittle the person they envy
Be overly critical
Be passive aggressive
Be insincerely complimentary
Use sarcasm when talking about the achievements of others
Be obsessive or hyperfocused
Use manipulation to get what they want
Forget about personal boundaries
Rude or short in conversation
Closed off and arms crossed
Frequently roll their eyes
Avoid direct eye contact
Tensed muscles
Biting lips or pouting
Disapproving facial expression
Red cheeks through anger or embarrassment
Leaning closer to the object of their desire
False smiles
Genuine joy when they’re in the presence of what they desire
Envious characters can become motivated to improve themselves to make them worthy of what they desire. If their envy becomes uncontrollable, they may also find personal growth in removing themselves from the situation and finding a new direction in life. It also allows characters the chance to develop empathy toward the person whom they envy or who possesses something that they covet, letting them finally appreciate what they already have.
Long-term envy can lead to lots of negative emotions like resentment, anger, and low self-esteem. This will affect relationships with those around them, leading them to break down or require conflict resolution in order to overcome.
Jealous
Covetous
Resentful
Grudging
Begrudging
Green-eyed
Yearning
Desirous
Longing
Grasping
Greedy
Hungering
Thirsting
Avaricious
Craving
Malcontent
Dissatisfied
Lustful
Wistful
Discontent