What is an interjection in a sentence?

An interjection in a sentence is a word or short phrase that shows strong emotion or reaction, such as "wow" or "ouch." It is usually separated from the rest of the sentence with a comma or exclamation point and is not needed for the sentence to be grammatically complete.

Is "wow" an interjection?

Yes, "wow" is a common interjection. It shows surprise or amazement, as in "Wow, that was a great game." The rest of the sentence would still make sense without it: "That was a great game."

Can an interjection be a full sentence?

Yes, an interjection can stand alone as a short sentence, especially in dialogue. For example, "Ouch!" or "Hey!" can be complete on their own because they clearly show a reaction, even though they do not have a subject and verb.

Where do you put an interjection in a sentence?

An interjection most often comes at the beginning of a sentence, like "Oh no, I forgot my homework." It can also appear in the middle or at the end, as long as it is set off with commas or an exclamation point to show it is separate from the main part of the sentence.

What Is an Interjection? Definition and Examples

Interjection explained for kids

An interjection is a word that pops out when you feel something strongly. Words like "wow," "ouch," and "hey" are interjections. They show surprise, excitement, or pain. Interjections often come at the beginning of a sentence and use an exclamation point!

Examples of interjections

Example 1 (simpler):

"Wow, this pizza is delicious."

"Wow" is the interjection. It shows strong surprise or excitement.
It is followed by a comma, and the rest of the sentence is a regular statement: "this pizza is delicious."

Example 2 (more advanced):

"Ouch! I stepped on a toy, and now my foot really hurts."

"Ouch" is the interjection. It shows sudden pain.
It stands alone as its own short sentence with an exclamation point.
The next part, "I stepped on a toy, and now my foot really hurts," is a complete sentence that explains what happened.

Going deeper with interjections

Interjections can show many kinds of feelings: surprise ("wow"), anger ("hey"), happiness ("yay"), disappointment ("oh no"), or thinking ("hmm"). They help readers hear the speaker's voice and mood.

In writing, interjections are usually separated from the rest of the sentence with a comma or an exclamation point. They can come at the beginning, middle, or end of a sentence, but they are not grammatically needed for the sentence to be complete.

As students move into higher grades, they learn that interjections are one of the main parts of speech, along with nouns, verbs, adjectives, and others. They also notice that interjections are common in dialogue, comics, and informal writing, but are used more carefully in formal essays and reports.

Common mistakes with interjections

Mistake 1: Thinking an interjection is the subject or verb of the sentence.
Incorrect idea: In "Wow, the game is over," a student might say "wow" is what the sentence is about.
Correction: "Wow" only shows feeling. The real subject and verb are "game" and "is." The sentence would still be complete as "The game is over."
Mistake 2: Forgetting punctuation around the interjection.
Incorrect: "Oh no the bus left" with no comma or exclamation point.
Correction: Add punctuation to separate the interjection: "Oh no, the bus left" or "Oh no! The bus left."
Mistake 3: Using interjections too often in formal writing.
Incorrect idea: Filling a school report with "wow," "yay," and "ugh" in every paragraph.
Correction: Interjections fit best in dialogue, stories, and casual writing. In formal writing, they should be rare and used only when a strong feeling really needs to be shown.

How interjections show up in everyday life

Interjections appear all around daily life. Kids hear them in comics, cartoons, and movies when characters shout "hey," "ouch," or "whoa." They show up in text messages and chats, like "yay!" when a friend shares good news. Even on the playground, quick words like "oops" or "wow" are interjections that show how someone feels in the moment.

Related grammar terms to explore

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What is an interjection?