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.

Men love to blame demons
when their grand plans UNRAVEL.
Game of Thrones Season 2, Episode 6

and that little fiction l just spun up
there is gonna completely UNRAVEL.
Breaking Bad Season 4, Episode 9

Tywin Lannister knows what he needs to
do to make us UNRAVEL.
Game of Thrones Season 3, Episode 5

Certainly I had the wherewithal
to UNRAVEL the mysteries
Game of Thrones Season 4, Episode 8