Articles in category: Common mistakes

10 Common Grammar Mistakes & How to Avoid Them

Published on August 20, 2025 by Nicole Routh, M.Ed Revised on November 3, 2025

Learning about the most common grammar mistakes is one of the best ways to avoid errors. The 10 most common grammar mistakes include soundalike errors with words like “its” and “it’s,” unnecessary commas, subject-verb agreement errors, and comma splices.

The tips and examples below will help you spot common grammar mistakes in your writing or avoid them altogether. QuillBot’s Grammar Checker is also an invaluable resource for avoiding errors, and it’s completely free to use. 

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*Noone or No One | Correct Spelling & Examples

Published on June 25, 2025 by Kate Santoro, BS Revised on November 4, 2025

No one is the correct spelling for the word that means “nobody.” Noone is a misspelling and is always incorrect.

Use QuillBot’s free Grammar Checker to make sure you always use no one and never noone.

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Yours or *Your’s | Correct Spelling, Use & Examples

Published on June 13, 2025 by Kate Santoro, BS Revised on November 3, 2025

Yours is the correct spelling for the second-person possessive pronoun. Your’s—with an apostrophe—is a misspelling of yours and is always incorrect.

Possession is usually indicated by adding ‘s to a word, but possessive pronouns are the exception to this rule. This is why some people get confused when choosing your’s or yours.

QuillBot’s free Grammar Checker will make sure you always use yours and never your’s.

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*Ninty or Ninety | How Do You Spell 90?

Published on April 28, 2025 by Kate Santoro, BS Revised on November 3, 2025

Ninety (with an “e”) is the correct spelling for the number that equals ten times nine (“90”). Ninty is a misspelling and is always incorrect.

Use QuillBot’s free Grammar Checker to make sure you always spell ninety correctly.

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*Finaly or Finally | How Do You Spell Finally?

Published on April 23, 2025 by Kate Santoro, BS Revised on November 3, 2025

Finally is the correct spelling for the adverb that means “after a long time” or “in the end.” Finaly is a misspelling and is always incorrect.

To avoid this mistake and others like it, use QuillBot’s free Grammar Checker.

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Due To or *Do To | Correct Spelling & Examples

Published on April 23, 2025 by Kate Santoro, BS Revised on November 3, 2025

Due to is the correct spelling of the phrase that means “because of” or “owing to.” Do to is a misspelling of this phrase and is always incorrect.

QuillBot’s free Grammar Checker can make sure you avoid this common mistake in your writing.

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Onto or On To | Correct Spelling & Examples

Published on April 15, 2025 by Kate Santoro, BS Revised on November 3, 2025

Onto is a preposition that expresses movement. On to are words that can appear next to each other but which don’t work together as a single unit.

As a general rule, use onto—and not on to—when you mean “on top of” or “upon.”

Use QuillBot’s Grammar Checker to quickly and easily find any mistakes with onto and on to.

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*Febuary or February | Correct Spelling & Examples

Published on April 14, 2025 by Kate Santoro, BS Revised on November 3, 2025

Febuary is a misspelling of February, the name of the second month of the year. February is always spelled with two “r’s,” and Febuary is always incorrect.

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*Piece of Mind or Peace of Mind | Spelling & Examples

Published on April 2, 2025 by Kate Santoro, BS Revised on November 3, 2025

Peace of mind is the correct spelling for the noun phrase that means “a feeling of being safe or content.” Piece of mind is a misspelling of this phrase and is incorrect in this context.

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*Wich or Which | Correct Spelling & Examples

Published on March 26, 2025 by Kate Santoro, BS Revised on November 3, 2025

Which is the correct spelling for the pronoun used to ask questions or present extra information.

Wich is a misspelling of which and is always incorrect in this context.

Continue reading: *Wich or Which | Correct Spelling & Examples