"Happiness" is not a word in Irish; it's an English word.
"What is the Irish for happiness" would be sonas, séan, or gliondar.
If you are trying to ask "What is the Irish for 'happy'", it is sona, séanmhar or gliondrach.
Happy!
The root word is sona which means 'happy, lucky, fortunate' in Irish and Scottish Gaelic.Nollaig shona is 'a happy Christmas' in Irish.
Happy new year in Irish
Nollaig Shona Dhuit means 'Happy Christmas to you' in Irish. In Irleland people speak English and Irish. So it is Irish for 'Happy Christmas to you'.
'A happy birthday',Lá breithe sona dhuit (A happy birthday to you) in Irish Gaelic.
You are trying to say "Happy Christmas" in Irish, but that is not they way it would actually be said. Sásta can mean happy or satisfied and Nollaig does mean Christmas, but the way of saying Happy Christmas in Irish is Nollaig ShonaDuit. It would be pronounced "Nullig hunna dhitch", with the hun in huna rhyming with gun.
'A happy birthday',Lá breithe sona dhuit (A happy birthday to you) in Irish Gaelic.
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
In Latin, Felicia means "happy, lucky, and fortunate." Because Ireland was part of the Roman Empire, Gaelic (Irish) language roots are largely Latin; therefore, in Irish the meaning would be the same.
áthas
hgfdsfghkjhgfd geta life
happy birthday mary