Main entry: cheerful
Definition: being full of or promoting cheer; having or showing good spirits
Usage: her cheerful nature; a cheerful greeting; a cheerful room; as cheerful as anyone confined to a hospital bed could be
Antonyms: cheerless, depressing, uncheerful
Definition: causing sad feelings of gloom and inadequacy
Antonyms: sad
Definition: experiencing or showing sorrow or unhappiness
Main entry: cheerful, upbeat, pollyannaish
Definition: pleasantly (even unrealistically) optimistic
Antonyms: pessimistic
Definition: expecting the worst possible outcome