On Android and even Windows Phone 8 it's pretty simple and fast to add words to your dictionary. Is there a way I'm not aware of on iOS via a Cydia tweak/app? A way to add a word without having to leave the app you're in? Currently what I do is go to Settings > General > Keyboard > Shortcuts. The reason I need this is because I use English letters to write in another language so what I do is add a shortcut for a word but the shortcut is the word so it never tries to autocorrect it.