MindNeed for relaxation, fun, joy, cheerfulness, brightness, colourfulness.
Over seriousness, overly grave, earnest, take themselves and life too seriously.
Lack of humour, childlike joy, delight, laugh, play, exuberance, lightness, lightheartedness.
Repressed inner child.
Depressed, sad, sombre, heaviness, self-consciousness, dullness.
Workaholism, unbalanced intensity.