Though theories about emotions stretch back at least as far as the Stoics of ancient Greece – to date, no definitive taxonomy of emotions exists, though numerous taxonomies have been proposed. And the biological necessity for some of the emotions (e.g. 'boredom' or 'shyness') remain sketchy - Source :wikpedia
A (partial) list of “relatively brief conscious experience characterized by intense mental activity and a high degree of pleasure or displeasure” (i.e. emotions) include:
Affection Anger Angst Anguish Annoyance Anticipation Anxiety Apathy Arousal Awe Boredom Confidence Contempt Contentment Courage Curiosity Depression Desire Despair Disappointment Disgust Distrust Ecstasy Embarrassment Empathy Envy Euphoria Fear Frustration Gratitude Grief Guilt Happiness Hatred Hope Horror Hostility Humiliation Hysteria Interest Jealousy Loneliness Love Lust Outrage Panic Passion Pity Pleasure Pride Rage Regret Remorse Resentment Sadness Saudade Schadenfreude Self-confidence Shame Shock Shyness Sorrow Suffering Surprise Trust Wonder Worry.