Sona, séanmhar, or gliondrach mean 'happy' in Irish.
In Irish 'happy' can be 'séanmhar', 'sona', 'sonasach' or 'meidhreach'.
The word most used in Leinster dialect anyway is áthas
sonas ort
hgfdsfghkjhgfd geta life
happy birthday mary
Is as an Bhulgáir mé.
You can say "ndi a vhothe" in Venda to mean "I am happy".
Lá Altaithe shona dhuit
Nollaig shona daoibh.
Tá mé ag dul
In Irish it's "Bain sult as do chaogadú breithlá" (or Bain sult as do 50ú breithlá)
Oíche Shamhna shona duit/ dhaoibh (plural)
Tá mé caillte gan tusa
Masayang-masaya ako.