Spelling and Grammar Check is probably one of the most disturbing settings default but by Mac OS XEspecially if users do not constantly write in one language.
Highlighted with red writing in texts TextEdit and other applications is pretty annoying and even if it can be disabled, the option Spelling and Grammar se automatically reactivates after reopening the application and/or after restarting the operating system.
To permanently disable "Spelling and Grammar Check"we will have to be very careful about the next steps.
1. To permanently disable spell checking and correction for all languages in all applications on Mac OS X, we're going to have to go in System > Library > Services and find the application AppleSpell.service.
AppleSpell.service contains the packages that deal with checking and correcting spelling.
2. Right-click on AppleSelect service and select Show Package Contents.
3. Under the folder "Contents"Find"Resources". All you need to do to permanently disable Spelling and Grammar it is to rename this folder (in Resources.disable, for example).
Order from terminal:
sudo mv /System/Library/Services/AppleSpell.service/Contents/Resources /System/Library/Services/AppleSpell.service/Contents/Resources.disabled
4. After renaming the folder "Resources", restart the process AppleSpell.service with the help Activity Monitor. Double-click AppleSpell.service & Quit.
Now checking and correcting spelling is disabled for all applications on Mac OS X. To reactivate this option, you will need to rename the folder "Resources.disable " in "Resources".
Note: Tutorial tested on Snow Leopard and OS X 10.9.1 Mavericks.
STEALTH SETTINGS - Permanently Disable Spelling and Grammar Check on Mac OS X