Envious (adjective)

1. Feeling or showing envy; resentful of someone or their achievements, possessions, or perceived advantages.
2. Characterized by or resulting from envy.

Origin:

From middle english envios, from old french envieus, from envie ("envy"), from latin invidia.

Examples:

1. She was envious of her sister's success.
2. He couldn"t help feeling envious when he saw his friend"s new car.
3. The envious glances from her coworkers made her uncomfortable.
4. She was too envious to be happy for her friend's promotion.
5. Her envious nature often caused problems in her relationships.