Part of a series on
Emotions
Acceptance Affection Amusement Anger Angst Anguish Annoyance Anticipation Anxiety Apathy Arousal Awe Boredom Confidence Contentment Courage Cruelty Curiosity Depression Desire Despair Disappointment Disgust Distrust Ecstasy Embarrassment Empathy Enthusiasm Envy Euphoria Excitement Fear Frustration Gratification Gratitude Greed Grief Guilt Happiness Hatred Horror Hostility Humiliation Interest Jealousy Kindness Loneliness Love Lust Nostalgia Outrage Panic Passion Pity Pleasure Pride Rage Regret Rejection Remorse Resentment Sadness Saudade Schadenfreude Self-confidence Shame Shock Shyness Social connection Sorrow Suffering Surprise Trust Wonder Worry

Loneliness is a sad emotion that a person can feel if they are isolated or feel a sense of lack of friends and family members. Loneliness can make people feel anxious.

People can feel lonely even if they are surrounded by a lot of other people. Loneliness can occur even to people in marriages, relationships, families and successful jobs. One cause of loneliness is a lack of friends during childhood and teenage years. Loneliness can also be caused by chronic depression. Loneliness can also be caused when a relationship or marriage ends.