Mirth, genial, convivial, enraptured, blithe, unalloyed, delirious, exhilarated, rhapsodic, enrapt, beatific, bonny, exultant, rollicking, jaunty, elysian, chipper, cavort, carousing, reveling - Isn't it interesting to discover that a normally used word 'happy' has so many synonyms?
Won't it...