happy in WordNet English dictionary

1. marked by good fortune
   "a felicitous life"; "a happy outcome"
   felicitous  happy 
   
2. eagerly disposed to act or to be of service
   "glad to help"
   glad  happy 
   
3. enjoying or showing or marked by joy or pleasure
   "a happy smile"; "spent many happy days on the beach"; "a happy marriage"
   happy 
   
4. well expressed and to the point
   "a happy turn of phrase"; "a few well-chosen words"
   happy  well-chosen