(GREETING) [adjective] [before noun; not gradable] - (used in greetings for special occasions) full of enjoyment and pleasureHappy Birthday/Anniversary!To Norma and John, wishing you a Merry Christmas and a Happy New Year, from Bill and Hilary. [before noun]
HAPPY
Meaning of HAPPY in English
Cambridge English vocab. Кембриджский английский словарь. 2012