blithe (adj.)
- beaming
- blase
- blissful
- blithesome
- boon
- bright
- carefree
- careless
- casual
- cheerful
- cheery
- chirpy
- delighted
- detached
- elated
- euphoric
- exalted
- exhilarated
- flushed
- gay
- genial
- glad
- gladsome
- gleeful
- glowing
- happy
- happy-go-lucky
- heedless
- high
- hopeful
- indifferent
- insouciant
- irrepressible
- jocund
- jolly
- jovial
- joyful
- joyous
- jubilant
- laughing
- light-hearted
- lighthearted
- lightsome
- merry
- mirthful
- optimistic
- pleasant
- radiant
- riant
- rosy
- sanguine
- sanguineous
- smiling
- sparkling
- sunny
- uncaring
- unconcerned
- winsome
There was a jolly miller once,
Lived on the river Dee;
He worked and sung from morn till night:
No lark more blithe than he.