为给定的英文单词列出10个近义词和反义词。
单词：happy
近义词： joyful, delighted, pleased, content, cheerful, elated, ecstatic, glad, merry, and jubilant.

反义词： sad, miserable, unhappy, depressed, sorrowful, downcast, dejected, despondent, gloomy, and melancholic.