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Resentment (also called ranklement or bitterness), not classified among Paul Ekman's six basic emotions of surprise, disgust, happiness, sadness, anger, and fear, is the foundation of hatred. Resentment comprises the three basic emotions of disgust, sadness and surprise -the perception of injustice. Resentment is a mixture of disappointment, anger, and fear. As the surprise of injustice becomes less frequent, so too does anger and fear fade -leaving disappointment as the predominant emotion. So, to the extent perceived disgust and sadness remain, so too does the level of disappointment remain.