Interjections are short words or expressions like Yay! and Wow!
They are used in sentences to express reactions and feelings.
Interjections can be used in various contexts.
They are used in:
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writing
-
speech
-
casual situations
-
informal situations
In formal situations, interjections should be avoided.
There is no specific placement for interjections in sentences. However, they need to be separated from the rest of the sentence with punctuation.
Interjections can be placed:
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at the beginning of a sentence
-
in the middle of a sentence
-
at the end of a sentence
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before a sentence
-
after a sentence
Interjection placed at the beginning of a sentence

When inserted at the beginning of a sentence, the interjection is followed by a comma.
Interjection placed in the middle of a sentence

When inserted in the middle of a sentence, the interjection needs to be enclosed by commas or parentheses.
Interjection placed at the end of a sentence

When placed at the end of a sentence, the interjection must be preceded by a comma.
Interjection after a sentence

When placed by themselves after a sentence, interjections function as full sentences and must be followed by a period, an ellipsis or an exclamation mark.
The punctuation choice strongly impacts the way the reader will interpret the interjection.
Readers and listeners rely on context to understand interjections.
Interjections can be used to express neutral, positive and/or negative reactions and feelings. This is why context plays an important role in understanding the meaning of interjections.
Neutral

Positive

Negative

Mh-hmm |
Cool |
Uh-huh |
Ya |
Yep |
Yeah |
Sure |
Okay |
Oh yes |

Whoopee |
Hurrah |
Yay |
Yahoo |
Yeah |
Yeehaw |
Yippee |
Sweet |
Terrific |

In informal writing, repeating the final letter of the interjection can help readers understand the tone and attitude of the person who used it.
Hi |
Hello |
Hey |
Howdy |
Wassup |
Bye |

Positive Surprise
Hi |
Hello |
Hey |
Howdy |
Wassup |
Bye |

Negative Surprise
Wow |
Woah |
Really |
Oh no |
Jeez |
Good grief |
Zounds |
Yikes |

Um |
Hmmm |
Uh |
I guess |
Er |
Let's see |

Oof |
Phew |
Whew |
Oh |
Ah |
Crikey |

Yuck |
Ew |
Ugh |
Yikes |
Yech |
Ick |
Bleh |
Ack |

Boo |
Oh |
Oh no |
Oh dear |
Oh well |
Aw |
Ah, I see |
Pfft |
Ugh |

Oof |
Ugh |
Ow |
Ouch |
Yeow |
Yeowch |

Argh |
Gee |
Gosh |
Come on |
Sheesh |
Dang |
Duh |
Watch it |

Hey |
Shh |
Ahem |
Hush |
||||||||
Shush |
Listen |
Psst |

Interjection |
Meaning |
Example |
Alas |
To express sadness or regret |
“Alas, we will continue the show without my assistant.” |
Boo |
To scare people by surprising them |
“Boo!” |
Boo-hoo |
To express fake crying when judging that someone is being over-sensitive. |
“Boo-hoo. Cry me a river.” |
Bravo |
To praise someone |
“Bravo Doug. Despite the fire and your assistant almost drowning, your first show was a success.” |
Duh |
To express that something is obvious |
“Do you think Emmy will want to get back on stage with you?” |
Eureka |
To celebrate a discovery or an invention |
“Eureka! I found my bad luck hat. Next time, that’s the one I’ll wear.” |
Eh? |
To express confusion |
“Eh? You have a bad luck hat?” |
Gulp |
To imitate the sound of swallowing to express stress |
“Have you talked to our manager since the show?” |
Ha-ha |
To sarcastically laugh |
“One of these days, we’ll laugh about it.” |
Hehe |
To express a giggle |
“Remember that time I put you on fire?” |
Mmmm |
To express pleasure |
“Mmmm … this head massage feels amazing. Thank you.” |
Meh |
To express disinterest in something |
“Mother, did you like the show?” |
Mwah |
To imitate the sound of blowing a kiss |
“Okay, I’ll see you tonight. Mwah!” |
Nah |
To express “no” |
“Do you want to hang out tomorrow?” |
Nana na nana |
To playfully mock someone |
“Nana na nana. I stayed underwater longer than Magicio’s assistant.” |
Ooh |
To express interest |
“I have something to tell you.” |
Oops |
To recognize that a mistake was made |
“Oops. I really should have arrived earlier to rehearse the fire trick.” |
Pew |
To express that something stinks |
“Pew, Harper! Did you fart again?” |
Pff |
To express that you are unimpressed |
“Magicio also did the fire trick with his audience yesterday.” |
Shoo |
To scare/send away a person/an animal |
“Harper, I need a little bit of privacy. Shoo!” |
Uh-oh |
To express concern that something bad will happen |
“Uh-oh, I think Harper is about to be sick.” |
Whoopsie/Whoops |
To recognize that a mistake was made |
“Whoops. My bad. I left the food on the counter.” |
Yum |
To express that something is tasteful or attractive |
“Yum. These tempura shrimp look delicious.” |
Zzzz |
To express boredom or fatigue |
“I’m feeling sleepy. Zzzz.” |
The spelling, meaning and pronunciation of many interjections can vary depending on the context and intentions of the person using them.
For example, the interjection Ah can be spelled in various ways to express different emotions depending on the context.


Some acronyms belong on the interjection list.
Acronyms are abbreviations of longer words formed with the initials of the words.
For example, LOL is the acronym for Laughing out loud.
Acronyms are considered interjections when their long-form version expresses a reaction or an emotion.
Acronym |
Long-Form |
Interjection? |
Explanation |
OMG |
Oh my god |
✔ |
Expresses surprise/shock |
ILY |
I love you |
✔ |
Expresses affection/love |
LOL |
Laughing out loud |
✔ |
Expresses laughter |
BRB |
Be right back |
X |
Does not express a reaction or an emotion |
LMK |
Let me know |
X |
Does not express a reaction or an emotion |
BTW |
By the way |
X |
Does not express a reaction or an emotion |