Synonyms For "Cheerful" :

1 syllable:

blithe, gay, glad

2 syllables:

beaming, beamish, blithesome, buoyant, cheery, chipper, chirpy, happy, jaunty, lightsome, perky, smiling, sunny, twinkly, upbeat

3 syllables:

debonair, debonaire, lighthearted, pollyannaish