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.

How do we CIRCUMVENT
his inevitable rejection?
The Big Bang Theory Season 2, Episode 9

As a consequence of your efforts
to CIRCUMVENT my will...
The Big Bang Theory Season 2, Episode 7