When someone is too greedy, it means that they have an insatiable desire for more than they need or deserve. Synonyms for this trait include avaricious, covetous, grasping, voracious, rapacious, and insatiable. These words all describe someone who is never satisfied with what they have and always wants more. Avaricious suggests an excessive desire for wealth or material possessions, while covetous implies a strong desire to possess something that belongs to someone else. Grasping describes someone who is always reaching out to take as much as they can, while voracious and rapacious both suggest a wild and uncontrolled hunger for more. Lastly, insatiable describes someone who can never be satisfied no matter how much they have.