adjective

happy and optimistic.

a cheery smile

jolly,happy,merry,bright,cheerful,glad,sunny,joyful,joyous,light-hearted,in high spirits,sparkling,bubbly,exuberant,ebullient,cock-a-hoop,elated,blissful,ecstatic,euphoric,gleeful,breezy,airy,sprightly,jaunty,animated,radiant,smiling,grinning,laughing,mirthful,frolicsome,happy-go-lucky,in good spirits,carefree,unworried,untroubled,without a care in the world,full of the joys of spring,buoyant,optimistic,hopeful,full of hope,positive,content,upbeat,chipper,chirpy,smiley,peppy,sparky,zippy,zingy,bright-eyed and bushy-tailed,full of beans,full of vim and vigour,peart,gay,gladsome,jocund,blithe,blithesome,of good cheer