Disable Autocorrect On Mac: A Complete Step-by-Step Guide For Every MacOS Version

Learn how to turn off autocorrect on Mac across all modern and legacy macOS versions, including Sequoia, Sonoma, Ventura, and Monterey. This guide details the exact navigation paths to disable automated spelling corrections, manage capitalization behaviors, and configure app-specific overrides. By modifying these system-level input parameters, you can eliminate disruptive typing adjustments and maintain precise manual control over your text output.

Operating system-level spelling correction is designed to streamline typing, yet it frequently disrupts the workflows of professionals who regularly use technical jargon, code snippets, multiple languages, or specialized terminology. On macOS, the automatic text replacement system relies on the global AppKit text engine. While native applications respect this global configuration, third-party software and multi-language input setups can introduce conflicting behaviors.

To permanently silence these interruptions, you must identify your active macOS version, locate the correct input system menu, and adjust your global text input variables.

Pre-Configuration System Analysis and Requirements

Before modifying your system configurations, you must identify your operating system version. Apple dramatically restructured the system configuration interface starting with macOS 13 Ventura, replacing the legacy System Preferences application with System Settings. This change altered the menu structure for keyboard and input device configurations.

Essential Prerequisites and Resource Allocation

• Supported Systems: Any Apple Mac hardware running OS X 10.12 (Sierra) through macOS 15 (Sequoia).
• Administrative Access: While local user profile changes do not require administrator elevation, modifying system-wide default profiles may require administrative credentials.
• Estimated Duration: 2 minutes for global system changes; 5 minutes for targeted third-party application exclusions.
• Required Tooling: The native Apple macOS operating system interface (no third-party software installation is required).

Step-by-Step Configuration Guide for Modern and Legacy macOS

The mechanism used to process text on your Mac depends on your operating system architecture. Follow the instructions below matching your specific macOS generation.

Step 1: Verify Your Active macOS Version

Before attempting to change your keyboard preferences, verify your operating system platform to ensure you follow the correct path.

1. Move your cursor to the top-left corner of your display.
2. Click the native Apple logo icon in the menu bar.
3. Select the first option, About This Mac, from the dropdown menu.
4. A system dialogue window will appear displaying your active operating system name (e.g., macOS Sequoia, macOS Sonoma, or macOS Monterey) and version number. Keep this window open or memorize the version name for the following steps.

Step 2: Disable Autocorrect on macOS Ventura, Sonoma, and Sequoia (macOS 13, 14, and 15)

These operating systems utilize the streamlined iOS-like System Settings layout. The spelling and text replacement options are nested within the advanced input source configurations.

1. Open the Apple Menu by clicking the Apple logo in the top-left corner of your screen.
2. Click on System Settings from the drop-down menu.
3. In the left-hand sidebar, scroll down until you locate the Keyboard option, then click it to load the keyboard configuration pane.
4. Locate the section labeled Text Input on the right side of the window.
5. Click the Edit button, which is situated directly next to the Input Sources option.
6. A new dialogue sheet will slide down from the top of the pane.
7. Locate the setting labeled Correct spelling automatically.
8. Click the toggle switch next to this option to change its state from active (green) to inactive (gray).
9. While in this menu, you can also toggle off Capitalize words automatically and Add period with double-space if you want to disable all automated text interventions.
10. Click the Done button in the bottom right of the sheet to commit and save your changes.

Step 3: Disable Autocorrect on macOS Monterey, Big Sur, and Catalina (macOS 12, 11, and 10.15)

Older versions of macOS rely on the classic System Preferences interface. Here, the keyboard configurations are organized across a tabbed layout.

1. Open the Apple Menu from the top-left corner of the display.
2. Select System Preferences from the options list.
3. Locate and click on the Keyboard icon within the grid panel.
4. Click on the Text tab located along the top horizontal menu bar of the Keyboard window.
5. In the top-right quadrant of this pane, find the checkbox labeled Correct spelling automatically.
6. Click the checkbox to uncheck it, disabling the feature.
7. Optional: Uncheck the box labeled Capitalize words automatically to prevent unexpected system-level capitalization modifications.
8. Close the System Preferences window. The changes are written to your user profile plist files and applied instantly.

Step 4: Force Global Override via Command Line (Advanced Users)

If the graphical user interface fails to apply the configuration or if you need to deploy this setting across a managed fleet of Mac computers, you can write the preference directly to the global domain using the macOS Terminal.

1. Launch your terminal emulator (Terminal or iTerm2) by searching for it via Spotlight Search (Command + Space).
2. To turn off global autocorrect for the current user profile, type the following command: defaults write -g NSAutomaticSpellingCorrectionEnabled -bool false
3. Press Enter to execute the command.
4. To disable automatic capitalization via the command line, type the following: defaults write -g NSAutomaticCapitalizationEnabled -bool false
5. Press Enter to execute.
6. To apply these modifications across all open applications, restart your Mac or log out of your user account and log back in.

Configuration Path and Feature Set Reference Matrix

Different versions of macOS utilize different menu terminology, user interface workflows, and background processes to govern automated typing assistance. The following table contrasts these technical frameworks.

Resolving Persistent Autocorrect Faults and Configuration Overrides

Sometimes, autocorrect functions persist even after you disable the global system-wide options. This occurs because third-party software applications often run custom text rendering engines that bypass the default macOS AppKit environment.

Scenario A: Microsoft Office Apps Continue to Autocorrect Your Typing

• Root Cause: Microsoft Word, Excel, and PowerPoint do not use the macOS system dictionary or text rendering system. Instead, they rely on Microsoft's proprietary Office Proofing Tools engine, which maintains separate independent autocorrect tables.
• Actionable Fix: Open Microsoft Word on your Mac. Click on the Word program name in the upper menu bar and choose Preferences. Select the AutoCorrect option (represented by a lightning bolt icon). Uncheck the box labeled Replace text as you type. If you also want to disable spelling alerts, go back to Preferences, open Spelling & Grammar, and uncheck Check spelling as you type.

Scenario B: Autocorrect Still Occurs Inside Google Chrome, Slack, or Discord

• Root Cause: These applications are built using the Chromium engine or the Electron framework. They bypass standard AppKit controls and run native spell-checking modules built directly into their web rendering components.
• Actionable Fix: Open the targeted application. Right-click inside any active text entry box or text editor field to bring up the context menu. Hover your cursor over the Spelling and Grammar option in the contextual menu. Uncheck Check Spelling While Typing or Autocorrect Spelling to disable the application's internal correction engine.

Scenario C: System Settings Fail to Save After a Major macOS Update

• Root Cause: Corruption of the global system preferences plist file (.GlobalPreferences.plist), which prevents the operating system from writing new keyboard configuration changes to your hard drive.
• Actionable Fix: Open Terminal and execute the command: rm ~/Library/Preferences/.GlobalPreferences.plist. After executing this command, immediately restart your Mac. Once your system boots up, navigate back to System Settings and re-toggle the Correct spelling automatically setting to the off position. This forces the OS to regenerate a clean, uncorrupted preferences file.

Frequently Asked Questions

Does turning off autocorrect also disable spell check and red underlines on my Mac?

No. Disabling automated spelling correction only stops the operating system from actively changing your typed words without your consent. It does not disable the spelling engine entirely. Misspelled words will still be flagged with a dashed red underline, allowing you to manually choose whether to correct them by right-clicking on the flagged term.

How do I turn off autocorrect for just one specific app, like Slack or Pages?

If you want to keep global autocorrect active but disable it within a specific native app, open that application and create a new document or open an existing window. Click Edit in the top menu bar, hover over Spelling and Grammar, and uncheck Correct Spelling Automatically. This selection overrides the global System Settings for that active application profile.

Why is my Mac still capitalizing the first letter of sentences after I turned off autocorrect?

Automatic capitalization is governed by a separate configuration toggle within the system settings. To disable this behavior, you must navigate to your keyboard settings pane and turn off the toggle labeled Capitalize words automatically. This stops your Mac from modifying lowercase letters at the start of new sentences or proper nouns.

Can I disable autocorrect for a specific language while keeping it for another?

The global macOS autocorrect toggle applies to all languages active on your system. However, you can change your spelling settings to a specific language instead of the default Automatic by Language option. This prevents spelling rules from one language from mistakenly correcting words typed in another. Configure this under the Spelling dropdown menu within your Keyboard Settings.

How do I reset my Mac's custom spelling dictionary to remove learned words?

If you have accidentally added misspelled words to your local dictionary, you can clear them by opening Finder, clicking Go in the top menu bar, holding down the Option key, and selecting Library. From there, open the Spelling folder, find the file named LocalDictionary, and open it with TextEdit. Delete the incorrect words from the list, save the file, and restart your Mac.

Optimize Your macOS Writing Environment

Managing your system-level input settings is key to building an efficient, distraction-free environment for professional writing and programming. Continue exploring advanced macOS keyboard shortcuts, text expansion profiles, and terminal custom scripts to maximize your productivity.