Share your experience!
Hello!
Is it possible to disable tracking of my writing style (history of words that are not in the enabled Language)?
The list of words is available here: Language & Input -> Xperia keyboard (International) -> Use my writing style -> My words. I know that there is an option to “Clear language data” (this must be done manually) or to disable Word suggestions (which disables “Gesture input” that I use for 1 language) – but these are not really convenient options.
By the way, this is huge problem for me as I use multiple languages (4 to be exact, 1 of which is not in the language options) and history of “My words” currently contains my personal information (from sms and, the main thing, NOTES).
Overall at this moment I see only 2 options – not to use “Gesture input” or risking to compromise personal information. Btw I am using Android 5.0.2.
Thank you and sorry for the long post!
You could clear data for xperia keyboard and this way you lose the words (if that's your wish).
Got response from SONY:
"Thank you for contacting Sony Xperia Support.
It's unfortunately not possible to have word suggestions activated and meanwhile disable the keyboards learning function."
Well... this is not good! 
Well,sorry to hear your aren't pleased.
Well that's a totally useless answer.