You may say 'omedetou.'
omedetou
On your grandchild's what? Be specific to get specific answers. Anyways that would be:'Mago-san no koto omedetou gozaimasu'.
Felicitaciones por su compromiso.
we say Nakagawa if we want to say inside in Japanese.
To say tennis in Japanese.........テニス
congratulations on.
omedetou
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 Filipino, you would say "Congratulations" as "Congratulations" or "Pakaka-bait."
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.