"In every language" makes this question impossible to answer.
The translated way to to say Happy Christmas in the Malyalam language is "Happy Krismas."
I am happy can be translated into Kikuyu language as de mukenu.
How do you say Happy Birthday in haida language
Happy Diwali
You say "I am very happy" in Yoruba language of the Western African origin as "Inumi dun gan".
Happy Birthday
"རིས་དང་ཕ་ཉི་ཀོ་ལོ།" (Ris dang pha nya ko lo) is how you say happy birthday in Tibetan.
Happy new year in Yoruba language is "Eku odun tuntun."
Happy mother's day
The English words 'happy days' are translated into the African Luhya language as "tsinyanga tsindayi".
The English words "I am happy today" are translated into "Nyangaino esangaree" in African Luhya language.
Belize's official language is English, so you don't say it any different than how you normally say it. HAPPY BIRTHDAY.