adjective

feeling or showing pleasure or contentment.

Melissa came in looking happy and excited

contented,content,cheerful,cheery,merry,joyful,jovial,jolly,joking,jocular,gleeful,carefree,untroubled,delighted,smiling,beaming,grinning,glowing,satisfied,gratified,buoyant,radiant,sunny,blithe,joyous,beatific,blessed,cock-a-hoop,in good spirits,in high spirits,in a good mood,light-hearted,good-humoured,thrilled,exuberant,elated,exhilarated,ecstatic,blissful,euphoric,overjoyed,exultant,rapturous,rapt,enraptured,in seventh heaven,on cloud nine,over the moon,walking on air,beside oneself with joy,jumping for joy,chirpy,on top of the world,as happy as a sandboy,tickled pink,tickled to death,like a dog with two tails,as pleased as Punch,on a high,blissed out,sent,chuffed,as happy as Larry,made up,as happy as a clam,wrapped,gay,blithesome,jocose,jocund