This is an old article but tells you the simple way to start over if your autocorrect is not meeting your needs. In my case, somehow the word “and” was changed to “abs” Every Single Time. Even overriding that substitution in Text Replacement under General, Keyboard, didn’t wipe out that quirk. It’s worth starting over with teaching autocorrect my preferences just to get rid of that one substitution. Grrr.
03.27.2014 06:30 AM
Fix Autocorrect’s Bad Habits by Resetting Your iPhone Dictionary
When your iOS keyboard gets a chronic case of letter-rot, try resetting the dictionary.
YOU KNOW HOW it’s supposed to work: As you type, your iPhone or iPad keyboard silently learns words in the background for future autocorrect suggestions. But sometimes that “learning” can backfire — especially if you inadvertently teach the system words and phrases you don’t really want autocorrected. Luckily, when your iOS keyboard gets a chronic case of letter-rot, there’s an easy way to undo all those bad habits.
If adding new shortcuts and contacts still hasn’t fixed your autocorrect woes, you likely need a fresh start. iOS 7 makes this easy.
Go to Settings > General > Reset and tap the “Reset Keyboard Dictionary” option. If you have a password set, your device will prompt you to enter it and then warn you that it’s about to “delete all custom words you have typed on the keyboard.” Say good riddance, and hit “Reset Dictionary.”
Bingo. No more typos or embarrassing autocorrects when using keyboard — at least for the next few months.