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.

- It's UNFORTUNATE.
- Yeah, UNFORTUNATE.
Breaking Bad Season 3, Episode 8

Sometimes fear makes them
do UNFORTUNATE things.
Game of Thrones Season 7, Episode 6

...really meant to hurt you.
They just told an UNFORTUNATE lie...
The Big Bang Theory Season 3, Episode 1

Well, that is UNFORTUNATE.
The Big Bang Theory Season 11, Episode 9

Well, that is UNFORTUNATE.
Game of Thrones Season 7, Episode 3