1. Being full of or promoting cheer; having or showing good spirits
   "her cheerful nature"; "a cheerful greeting"; "a cheerful room"; "as cheerful as anyone confined to a hospital bed could be" 
2. Pleasantly (even unrealistically) optimistic
   - pollyannaish, upbeat

See also: beaming, beamish, blithe, blithesome [archaic], buoyant, cheer, cheerfulness, cheery, chipper, chirpy, debonair, debonaire, gay, glad, happy, jaunty, lighthearted, light-hearted, lightsome, optimistic, perky, smiley, smiling, sunniness, sunny, sunshine, sunshiny, twinkly

Antonym: depressing

• modeling
• modelled
• modeller
• modelling
• modem
• Modena
• moderate
• moderate breeze
• moderate gale
• moderate-size
• moderate-sized
• moderately
• moderateness
• moderating
• moderation
• moderationism
• moderationist
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