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 Checkerย is also an invaluable resource for avoiding errors, and it’s completely free to use.ย
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. Yourโsโwith an apostropheโis a misspelling of yours and is always incorrect.
Possession is usually indicated by adding โs to a word, but possessive pronouns are the exception to this rule. This is why some people get confused when choosing yourโsoryours.
Published on
April 28, 2025
by
Kate Santoro, BS.
Revised on
March 24, 2026
Ninety (with an โeโ) is the correct spelling for the number that equals ten times nine (โ90โ). Ninty is a misspelling and is always incorrect.
Ninty or ninety example
My grandmother just turned ninety.
My grandmother just turned ninty.
Small mistakes like this can make your writing feel less polished. QuillBotโs Humanize AI tool can help refine your text so it reads smoothly, naturally, and without distracting errors.
Published on
April 23, 2025
by
Kate Santoro, BS.
Revised on
November 3, 2025
Finally is the correct spelling for the adverb that means โafter a long timeโ or โin the end.โ Finaly is a misspelling and is always incorrect.
Finaly or finally example
After days of walking, we finally arrived at the town.
After days of walking, we finaly arrived at the town.
To avoid this mistake and others like it, use QuillBotโs free Grammar Checker.
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 โbecause ofโ or โowing to.โ Do to is a misspelling of this phrase and is always incorrect.
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 โrโs,โ and Febuary is always incorrect.
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 โa feeling of being safe or content.โ Piece of mind is a misspelling of this phrase and is incorrect in this context.
Piece of mind or peace of mind example
My home security system has given me a greater peace of mind.
My home security system has given me a greater piece of mind.
