Cheerful 1
Definition: Having or showing good spirits
or joy; cheering; cheery;
contented; happy; joyful; lively; animated; willing.
cheerful 2
Definition: 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"
cheerful 3
Definition: pleasantly (even unrealistically) optimistic