cheerful
cheer·ful
 /ˈʧiɚfəl/  adj   [more ~; most ~]
  1 a : feeling or showing happiness
   a cheerful face/person
   She has a cheerful outlook on life.
   He seems a little more cheerful today.
  1 b : feeling or showing that you are willing to do something without complaining
   cheerful obedience
  2 a : causing good feelings or happiness
   cheerful words/news
  2 b : bright and pleasant to look at
   cheerful colors
   a sunny cheerful room
  cheer·ful·ly  adv  
   He cheerfully admitted that he was wrong.
   She greeted us cheerfully.
  cheer·ful·ness  noun   [  nouncount  ]