Ecstatic, overjoyed.
Healthappy (healthy and happy)
abundant
surplus overabundance surfeit
yummy
Passion is the only word I can think of right off hand.
The prefix "un-" could be added to the word happy to create the word "unhappy," which means not happy.
greatful is another word for happy
Majority means greater than half. Greater means more than.
Being unable to be happy means being Miserable
Try the word Cherish
Healthappy (healthy and happy)
majority
abundant
Yearn
Less or more
endlessness
The word "sufficient" means enough. The word "ample" means more than enough.