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.

...the severing of which
would cause me any DISCOMFORT.
The Big Bang Theory Season 4, Episode 3

I'm sorry this causes
you DISCOMFORT,
The Big Bang Theory Season 5, Episode 10

I made it to lessen your DISCOMFORT.
The Big Bang Theory Season 3, Episode 2

Well, first of all, don't underestimate
the value of DISCOMFORT.
The Big Bang Theory Season 2, Episode 22

Okay, but you may
feel some DISCOMFORT.
The Big Bang Theory Season 10, Episode 7