Stronger, more negative:
* Covetousness: This implies a strong desire for something that belongs to another.
* Jealousy: This emphasizes the bitter resentment that comes with envy, often focused on a specific person.
* Resentment: This emphasizes the feeling of bitterness and anger towards someone for having something you desire.
* Spite: This emphasizes the malicious feeling of wanting to harm the person you envy.
* Malice: This emphasizes the intention to cause harm to the person you envy.
More neutral:
* Desire: This focuses on the longing for something that is not yours.
* Yearning: This emphasizes the longing and sadness that comes with envy.
* Craving: This emphasizes the intense desire for something that is not yours.
* Longing: Similar to yearning, but more focused on the object of envy itself.
More specific:
* Emulation: This implies a desire to be like the person you envy.
* Imitation: This implies a desire to copy the person you envy.
* Green-eyed monster: A literary term for envy, especially when it is intense.
The best synonym for you will depend on the specific context and the feeling you want to convey.