Word Example from TV Shows
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 should've known BETTER.
The Big Bang Theory Season 7, Episode 1

All right, well, I had BETTER go
and get this in the mail.
Breaking Bad Season 5, Episode 14

- How'd things go with Penny?
- Oh, couldn't be BETTER.
The Big Bang Theory Season 3, Episode 12

That's BETTER