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.

- That's FOUL.
- It's beyond FOUL.
Game of Thrones Season 2, Episode 1

- That's FOUL.
- It's beyond FOUL.
Game of Thrones Season 2, Episode 1

We are swollen, bloated, FOUL.
Game of Thrones Season 2, Episode 5

But he had demons in his skull
whispering FOUL things.
Game of Thrones Season 6, Episode 9

Got no fathers to slap
them when they're FOUL.
Game of Thrones Season 3, Episode 1