Autocorrect helps you correct spelling errors and grammar automatically. It also compares the words you type with an internal dictionary and replaces any perceived errors with what’s assumed to be the proper spelling. While this can be a blessing in disguise, it can be a nuisance for others, especially if it keeps changing proper names, abbreviations, and spelling of street addresses. This feature is automatically enabled but can be disabled by following these steps:

1. 1. Click the Apple logo from the Mac’s menu bar, followed by System Preferences
      

1. 1. Choose Keyboard
      

1. Find Text input at the top and select Edit
   
2. Turn off the Autocorrect feature by toggling off Correct spelling automatically
   

You can follow similar steps to turn on autocorrect on your Mac as required. Your Mac can also capitalize proper nouns like names of places or people and the first words in sentences automatically. This is achieved by enabling the Capitalize words automatically option.

As you type on a Mac, you can access the suggested words by pressing F5. In some cases, you may need to press Fn  + F5, depending on the Mac you own. If your Mac has a Touch Bar, typing suggestions are shown directly on it.