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 gave it to you to cut the rope,
and now I don't have me DAGGER no more.
Game of Thrones Season 2, Episode 10

- Do you have the enchanted sword?
- I have a bronze DAGGER.
The Big Bang Theory Season 2, Episode 3

- Why would he give you a DAGGER?
- He thought I'd want it.
Game of Thrones Season 7, Episode 4

When the Knight of the Flowers unseated him,
I lost this DAGGER.
Game of Thrones Season 1, Episode 3

Did you notice the DAGGER the killer used?
Game of Thrones Season 1, Episode 2