adj. 25B6; adjective
Melissa looked happy and excited : CHEERFUL, cheery, merry, joyful, jovial, jolly, jocular, gleeful, carefree, untroubled, delighted, smiling, beaming, grinning, in good spirits, in a good mood, light-hearted, pleased, contented, content, satisfied, gratified, buoyant, radiant, sunny, joyous, beatific; thrilled, elated, exhilarated, ecstatic, blissful, euphoric, overjoyed, exultant, rapturous, in seventh heaven, on cloud nine, walking on air, jumping for joy, cock-a-hoop, jubilant; informal chirpy, over the moon, on top of the world, as happy as a sandboy, tickled pink, like a dog with two tails, as pleased as Punch, on a high; Brit. informal chuffed, as happy as Larry; N. English informal made up; N. Amer. informal as happy as a clam; Austral. informal wrapped; poetic/literary blithe; formal jocund; dated gay.
we will be happy to advise you : GLAD, pleased, delighted; willing, ready, disposed.
a happy coincidence : FORTUNATE, lucky, favourable, advantageous, opportune, timely, well-timed, convenient.
sad, unwilling, unfortunate.