I need a word for something that can't be confessed or, in a more general way, something secret about you or someone else, that you wouldn't normally want the world to know about (if they know it comes from you, but you have no problem sharing it anonymously).
but not something like unspeakable (evil or bad).
It might be like a positive thing to say, but you can't just say it because you are afraid what other people might think of you.
Is there any other word, besides unconfessable, that can describe the above?
edit: found out the word unmentionable