Disable auto suggest typing when using the CTRL key Sometimes when I press and release the CTRL key while my cursor is in a text field, the letter "I" gets inserted and an autosuggest list gets opened.



I really really dislike this because I often press and release the CTRL key without wanting to type anything.

How can I disable this functionality?
As noted in another answer:

It's the auto completion from the built in spell checker and after a lengthy search I found the solution in Apples Discussion Forums:

defaults write -g NSUseSpellCheckerForCompletions -bool false


Afterwards restart affected programs and Esc just cancels searches again.