I'm not sure of the correct spelling.

我拿不准拼写是否正确。

youdao

Why don't you write down the correct spelling?

为何不把正确的拼写记下来呢？

youdao

Why couldn't you look up the correct spelling of the word?

为什么你不查一下那个单词的正确拼写呢？

youdao

It was a short way of writing a different spelling of the words all correct. Some foreign-born people wrote all correct as o-l-l k-o-r-r-e-c-t, and used the letters O.K.

VOA: special.2010.02.28

The incorrect spelling of Blu-ray is often more popular than the correct spelling.

ENGADGET: The format war: What's in a name? HD

When she guessed the correct spelling, she leaped all the way back to her seat and advanced to the finals.

WSJ: After 1st vocab test, Spelling Bee gets a champion

When she came up with the correct spelling, she leaped all the way back to her seat and advanced to the finals.

WSJ: Spelling Bee: 11 finalists compete for trophy