コウ 
さいわ.い さち しあわ.せ 
() happiness () blessing () fortune
  
さち (n) (1) good luck, fortune, happiness, (2) harvest, yield
さいわい (adj-na,adv,n) happiness, blessedness
しあわせ (adj-na,n) happiness, good fortune, luck, blessing
こううん (adj-na,n) good luck, fortune
こうふく (adj-na,n) happiness, blessedness, joy, well-being

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字