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.

I'm leaving this WRETCHED
city as fast as I can,
Game of Thrones Season 6, Episode 7

If my WRETCHED brother
should somehow prevail,
Game of Thrones Season 2, Episode 9

Do you know this WRETCHED girl,
Game of Thrones Season 5, Episode 2