Which is more normal, "OK" or "オーケー"?


Which is more normal in Japanese, "OK", or "オーケー", assuming either of them is
in common usage?

I tried using the corpus on jisho.org, but the results were messed up by "OK"
appearing in the English version.
[Tatoeba](http://tatoeba.org/eng/sentences/search?query=%E3%82%AA%E3%83%BC%E3%82%B1%E3%83%BC&from=jpn&to=eng)
didn't get many matches for "オーケー", and many of them seemed to be false hits,
and also got few hits for "OK" — is neither form commonly used in Japanese?




I assume by "normal in Japanese" you mean in writing, because "OK" can only be
written Japanese.

I think this is best answered by a corpus search. The National Institute for
Japanese Language and Linguistics provides an annotated version of the
Balanced Corpus of Contemporary Written Japanese, giving the following
results:

> 4241 results in total
>
>   * OK  
>  3849 results (91%)
>   * オーケー  
>  200 results (5%)
>   * オッケー  
>  100 results (2%)
>   * オーケイ  
>  43 results (1%)
>   * おｋ  
>  38 results (1%)
>   * オッケ  
>  8 results
>   * おーけー  
>  3 results
>

To do this yourself, go to <http://nlb.ninjal.ac.jp/search/>, search for
`オーケー` taking you to <http://nlb.ninjal.ac.jp/headword/N.00969/>; go to the
`基本` tab and expand `書字形`.




I assume by "normal in Japanese" you mean in writing, because "OK" can only be
written Japanese.

I think this is best answered by a corpus search. The National Institute for
Japanese Language and Linguistics provides an annotated version of the
Balanced Corpus of Contemporary Written Japanese, giving the following
results:

> 4241 results in total
>
>   * OK  
>  3849 results (91%)
>   * オーケー  
>  200 results (5%)
>   * オッケー  
>  100 results (2%)
>   * オーケイ  
>  43 results (1%)
>   * おｋ  
>  38 results (1%)
>   * オッケ  
>  8 results
>   * おーけー  
>  3 results
>

To do this yourself, go to <http://nlb.ninjal.ac.jp/search/>, search for
`オーケー` taking you to <http://nlb.ninjal.ac.jp/headword/N.00969/>; go to the
`基本` tab and expand `書字形`.

