blithesome (adj.)

• beaming
• blithe
• boon
• bright
• cheerful
• cheery
• elated
• euphoric
• exalted
• exhilarated
• festive
• flushed
• gay
• genial
• glad
• gladsome
• gleeful
• glowing
• happy
• high
• hopeful
• irrepressible
• jocund
• jolly
• jovial
• laughing
• lighthearted
• optimistic
• pleasant
• radiant
• riant
• rosy
• sanguine
• sanguineous
• smiling
• sparkling
• sunny
• winsome