
Taming Typos: A Guide to Spell Check
Composition I — Lecture Notes on Proofreading with Technology
How Spell Check Works (The Basics)

All modern word processors compare every word you type against a built-in dictionary. When a word doesn’t match anything in the dictionary, the program flags it—usually with a red or colored underline. You can then right-click (or tap) the flagged word to see suggested corrections.
Most spell checkers today also include a basic grammar check, which highlights potential grammar issues with a different colored underline (often blue or green). Grammar suggestions might flag passive voice, subject-verb agreement problems, or comma usage. These suggestions are useful, but they are not always correct, so treat them as recommendations rather than rules.
What Spell Check Can Catch
Misspelled words (e.g., recieve → receive), repeated words (e.g., the the), and irregular capitalization are all reliably flagged. Many tools also catch basic punctuation errors and some grammatical mistakes.
What Spell Check Will Miss
Homophones (to/too/two, affect/effect), correctly spelled but wrong words (form when you meant from), proper nouns the dictionary doesn’t know, and nuanced grammar issues like dangling modifiers or unclear pronoun references. This is why a human eye—yours—is still essential.
Using Spell Check in Microsoft Word
Microsoft Word has one of the most mature spell-check systems available. It checks your spelling and grammar automatically as you type, and it also offers a dedicated proofing tool you can run when you are ready to review your entire document at once.
Automatic Checking (As You Type)
By default, Word underlines suspected spelling errors with a red wavy line and grammar issues with a blue double underline. To correct a flagged word, right-click it (or Ctrl+click on Mac) and choose from the suggested corrections. You can also choose Ignore if the word is correct, or Add to Dictionary if it’s a word you use often (such as your last name).
Running a Full Document Check
- Open your document in Word and place your cursor at the beginning of the document.
- Go to the Review tab in the ribbon at the top of the screen.
- Click Spelling & Grammar (or press the keyboard shortcut F7).
- An Editor pane will open on the right side. Word will step through each flagged issue one at a time. For each issue, you can accept a suggestion, ignore it, or add the word to your dictionary.
- When Word has cycled through every issue, it will display a message confirming the check is complete. Click OK.
Adjusting Your Settings
If you want more control, go to File → Options → Proofing (on Windows) or Word → Settings → Spelling & Grammar (on Mac). Here you can turn automatic checking on or off, choose which types of grammar errors to flag, and manage your custom dictionary.
Using Spell Check in Google Docs
Google Docs runs entirely in your web browser, which means spell check happens through Google’s servers. The experience is similar to Word in many ways, but the interface is a bit different.
Automatic Checking (As You Type)
Google Docs underlines spelling errors with a red wavy line and grammar suggestions with a blue wavy line. Right-click any flagged word to see suggestions. You can accept a suggestion, dismiss it, or add the word to your personal dictionary.
Running a Full Document Check
- Open your document in Google Docs.
- Go to Tools in the menu bar and select Spelling and grammar → Spell check (or press Ctrl+Alt+X on Windows, or ⌘+Alt+X on Mac).
- A small dialog box will appear in the upper-right corner of your document. It shows the flagged word and suggested corrections.
- Click Accept to apply a suggestion, Ignore to skip it, or Change to type your own correction.
- The tool moves automatically to the next issue until you have reviewed all flagged items.
Turning Spell Check On or Off
Navigate to Tools → Spelling and grammar and ensure both Show spelling suggestions and Show grammar suggestions are checked. If the underlines feel distracting while you draft, you can uncheck these and run a full check later when you are ready to proofread.
Using Spell Check in Apple Pages

Apple Pages uses macOS’s built-in spell-check engine, which means the experience is consistent across many Mac applications. If you are working on an iPad, Pages uses the same system-level checking available in iPadOS.
Automatic Checking (As You Type)
Pages underlines suspected misspellings with a red dashed line. Right-click (or Control+click) a flagged word to see spelling suggestions. Select the correct word, choose Ignore Spelling, or choose Learn Spelling to add it to your Mac’s dictionary.
Running a Full Document Check
- Open your document in Pages.
- Go to Edit → Spelling and Grammar → Check Document Now (or press ⌘+; to jump to the next misspelled word).
- Pages will highlight the next flagged word in your document. Right-click it to see suggestions.
- Correct or ignore the flagged word, then press ⌘+; again to move to the next one.
- Continue until Pages no longer finds any additional flagged words.
Opening the Spelling & Grammar Window
For a panel-style experience similar to Word, go to Edit → Spelling and Grammar → Show Spelling and Grammar (or press ⌘+:). This opens a floating panel where you can cycle through issues, change words, and learn new words, all in one place.
Quick-Reference Comparison
| Feature | Microsoft Word | Google Docs | Apple Pages |
|---|---|---|---|
| Run full spell check | F7 | Ctrl+Alt+X | ⌘+; |
| Spelling error indicator | Red wavy underline | Red wavy underline | Red dashed underline |
| Grammar check indicator | Blue double underline | Blue wavy underline | Green underline |
| Add word to dictionary | Right-click → Add to Dictionary | Right-click → Add to personal dictionary | Right-click → Learn Spelling |
| Settings location | File → Options → Proofing | Tools → Spelling and grammar | Edit → Spelling and Grammar |
Best Practices for This Course
Spell check is one step in a multi-step proofreading process. Here is a practical workflow you can follow before submitting any assignment in this class.
- Write first, check later. Do not stop to fix every red underline while you are drafting. Let your ideas flow, then come back to proofread once you have a complete draft.
- Run the full spell check. Use the tool in whichever word processor you are using. Review each suggestion carefully; do not blindly accept every change.
- Read your paper aloud. Your ear will catch awkward sentences and wrong-word errors (like then vs. than) that spell check misses.
- Use a second pair of eyes. Visit the campus Writing Center or swap drafts with a classmate. A fresh reader often spots what you cannot.
- Submit with confidence. Once you have run spell check, read aloud, and revised, you can turn in your paper knowing you have done your due diligence.