The English to Gaelic translation would be:
Congratulations - Comhghairdeas
Comhgairdeachas
congratulations on.
No, you cannot say, they send their congratulations. You have to say they sent their congratulations.
In Māori, you can say "whakamihi" which means congratulations.
no flowers say congratulations
In Irish it's "comhghairdeas"
You can say "čestitke" in Bosnian to say congratulations.
In Hindi, you can say congratulations by saying "बधाई हो" (Badhai ho).
To say "congratulations" in French, you can say "félicitations."
congratulations on your wedding
"Proficiat" is how you say congratulations in Flemish.
In Latin, you can say "Gratulor," which means congratulations.