Formal:
* Tunampenda Baba: This is the most literal translation and is the most formal way to say it.
* Tunamuhubiri Baba: This means "We love Daddy dearly" and is more affectionate.
Informal:
* Tunampenda Baba yetu: This means "We love our Daddy" and is a more intimate way to say it.
* Tunamupenda sana Baba: This means "We love Daddy very much" and is a very affectionate way to say it.
You can also use "Baba" (Daddy) on its own and simply say:
* Tunampenda! (We love him!)
The best way to choose the right phrase depends on who you are talking to and the situation.