cheerful
1. [ adjective ] being full of or promoting cheer; having or showing good spirits
Examples:

"her cheerful nature" "a cheerful greeting" "a cheerful room" "as cheerful as anyone confined to a hospital bed could be"

Related terms: cheerless glad cheery buoyant beamish beaming chipper blithe cheering happy glad cheerfulness
2. [ adjective ] pleasantly (even unrealistically) optimistic
Synonyms: upbeat pollyannaish
Related terms: optimistic
Similar spelling:   cheerfully
  chervil
  cherry_plum