Common slip-ups
You're saying it wrong! These are the 10 most common grammar mistakes
Published on March 16, 2025
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We all slip up from time to time, but it turns out that some errors are more common than others, especially when it comes to reading and writing. Of course, there is no "unique" way to use language, but even if we've spoken English since childhood, there are still common "mistakes" that native speakers tend to make. Read on to see if you make any of these too!
There/their/they're
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Ever received a message that reads, "I love they're new house"? Homophones are words that sound the same (or very, very similar), and this is the case with "there," "their," and "they're," which is why many native speakers tend to confuse them.
However, these three words have quite different meanings and functions. "There" can be used with the verb to be, as in "There's a problem with your order," or as an adverb to indicate place: "I found the cat; it's there!" On the other hand, "their" functions as a possessive, indicating ownership, as in "I love their new house." Finally, "they're" is a contraction of "they are," as in "They're a lovely couple."
Your/you're
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You've probably written or read something like "I think your right about that" or "I'd love to meet you're parents." These usages are considered incorrect, but don't worry—you’re not alone! Like the words in the previous entry, "your" and "you're" are homophones, meaning they sound identical when spoken.
To understand them better, remember that "you're" is a contraction of "you are" (pronoun + verb), as in "You're the best friend I ever had." Meanwhile, "your" is a possessive adjective, which indicates that something belongs to "you."
Fewer/less
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This case is different from the previous ones. The common confusion between "fewer" and "less" has nothing to do with pronunciation but rather with meaning, as both are quantifiers used for comparisons and indicate a smaller quantity.
The key is knowing which type of noun each word should be used with. "Fewer" is used with countable nouns (things you can count individually), as in "He made fewer mistakes this time." On the other hand, "less" is used with uncountable nouns (things you can't count individually, as they are considered a whole), such as in "You drank less water today than yesterday."
Affect/effect
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Another case of commonly confused words is "affect" and "effect." In addition to their similar pronunciation, these two terms also have related meanings, making it even more challenging to distinguish between them.
"To affect" is a verb meaning "to cause a change" or "to influence." For example, you can say, "Cold weather affects my mood." On the other hand, "effect" is a noun that indicates the consequence of an action or change, as in "The storm had a devastating effect on the city." To simplify: "affect" is the action, while "effect" is the result.
Me/I
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Many times, we tend to say things like, "The teacher gave an assignment to Lily and I." While that's quite common, it's actually a grammatical error.
We know it’s difficult to tell them apart: both are pronouns used to refer to oneself. However, each has a different function. "I" is used as the subject of the sentence (the one performing the action), as in "Sarah and I went to the store." "Me," on the other hand, is used as the object of the sentence (the one receiving the action), as in, "The doctor told Lucas and me to drink more water."
Lose/loose
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Another pair of very, very similar words: lose and loose. The key to distinguishing them is understanding what kind of word each one is.
"Lose" is a verb, meaning it always indicates an action (and can be expressed in the past, present, or future tense). For example: "I don't want to lose my keys" or "Joan lost the remote control." On the other hand, "loose" is an adjective, meaning it describes the characteristics, state, or condition of something, as in "I prefer loose pants; tight ones make me uncomfortable."
Well/good
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"I slept well last night" or "I slept good last night"? (Spoiler: it's the first one!) But why? While both "well" and "good" are used to describe something positively, they are different types of words.
"Well" is an adverb, meaning it describes the verb. In the sentence "She sings well," the adverb modifies the verb "sings." Meanwhile, "good" is an adjective, so it describes a noun, as in "She's a really good singer!"
Could have/Could of
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The confusion between "could have" and "could of" is so widespread that many of us sometimes don’t even notice it. This error usually occurs because of the way they sound when pronounced.
When said quickly in conversation, "could have" can sound like "could of." But there's only one correct form: "could have" ("could of" has no grammatical meaning). For example, "I could have done better on the test" is correct, while "I could of done better on the test" is not.
Lay/lie
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Ok, homophones really can cause chaos, and this is the case with the words "lay" and "lie," which also have similar meanings. We must warn you: If you say, "I need to lay down," you're officially guilty!
While both words have to do with position, "lay" requires a direct object (something being placed), whereas "lie" does not. In other words, "lay" means to put something down (it needs an object), while "lie" means to recline or rest (no object needed).
Literally
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Finally, we have a word that has often been used incorrectly or exaggeratedly in recent times: "literally" — or just "lit" if you're really cool.
According to the dictionary, "literally" means something happened exactly as stated, without exaggeration. However, in modern slang, it's often used to emphasize or dramatize a situation. For example, you might hear someone say, "I literally died laughing." Of course, if they're saying it, then luckily, they didn't literally die!
