To dream that you laugh and feel cheerful, means success in your undertakings, and bright companions socially. Laughing immoderately at some weird object, denotes disappointment and lack of harmony in your surroundings.
To hear the happy laughter of children, means joy and health to the dreamer.
To laugh at the discomfiture of others, denotes that you will wilfully injure your friends to gratify your own selfish desires.
To hear mocking laughter, denotes illness and disappointing affairs.... Ten Thousand Dream Interpretation
Laughing in a dream means happiness and joy in wakefulness, except if one bursts with a horselaugh or falls over his back from laughing in his dream.
If so, then it means crying.
If one’s laughter in his dream is caused by a joke, then it denotes his dishonesty.
The same goes for laughing by imitation in a dream which means falling into sin. Laughing in a dream also could mean sorrow in wakefulness. Laughing in a dream also means that one will receive news about a newborn son.
If one’s laughter in a dream is as gentle and soft as a smile, then it denotes his good character and means happiness, or it could denote exactly what he shall see in wakefulness. Ifone sees the earth laughing in a dream, it means a good harvest in that land. Ifone sees a deceased person laughing in a dream, it means that he is in paradise, and enjoying the blessings ofthe hereafter. Laughing in a dream also represents Iightheadedness, frivolity and buoyancy. This is particularly true when it denotes capable people, or people in authority, where laughing in a dream could mean their dismissal from office. (Also see Crying; Laughter)... Islamic Dream Interpretation
Usually seen in a very difficult situation, where laughing is the last thing that you’d like to do. Laughing is a form of relaxation. Sometimes it is also an expression of the search for freedom and emotional peace.... Little Giant Encyclopedia
To dream of laughing may indicate a buildup of stress or tension. Many people laughing is a message to give yourself a break and be a little more playful in your waking life. Someone laughing at you implies social anxiety and the need to be mentally kinder to yourself.... Dream Symbols and Analysis
A dream of contrary, and it is especially serious if you Laugh immoderately or without good cause. Be careful with your love affairs for Laughter in a dream means tears and sorrow in your life.... Mystic Dream Book