The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

Oh, under the careful supervision
of her GODFATHER.
The Big Bang Theory Season 10, Episode 15

I'm her GODFATHER,
that means something.
The Big Bang Theory Season 11, Episode 11

and GODFATHER.
The Big Bang Theory Season 10, Episode 11