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.

Should l not worry that
Gus plans to MURDER me
at the first chance he gets?
Breaking Bad Season 4, Episode 4

she'd MURDER him, too,
long before he drew his first breath.
Game of Thrones Season 4, Episode 2

and is somehow convinced
not to MURDER us
Game of Thrones Season 7, Episode 5

Are you asking me
if I ordered the MURDER of a child?
Breaking Bad Season 3, Episode 13

You won't order them to MURDER babies.
Game of Thrones Season 3, Episode 1