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.

But I am SORE.
The Big Bang Theory Season 12, Episode 7

Yeah, but if he's a SORE loser,
maybe you're better off without him.
The Big Bang Theory Season 6, Episode 6

Can't believe you're SORE.
The Big Bang Theory Season 8, Episode 3

Gosh. He's kind of a SORE loser, isn't he?
The Big Bang Theory Season 1, Episode 7

It's a SORE spot, don't bring it up.
The Big Bang Theory Season 9, Episode 20