Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
mood killer
Grammar usage guide and real-world examplesUSAGE SUMMARY
"mood killer" is a correct and usable phrase in written English.
It is typically used to describe something that ruins or negatively affects the overall mood or atmosphere of a situation or setting. For example: "The loud argument between the couple was a real mood killer at the romantic dinner." "The rainy weather was a mood killer for the outdoor concert." "The team's loss was a definite mood killer for the celebratory party." "I was having a great time at the party until that awkward conversation became a total mood killer."
✓ Grammatically correct
News & Media
Wiki
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
21 human-written examples
A mood killer when it's wrong, though – like music.
News & Media
I think the toilet would be kind of a mood killer".
News & Media
One man's love potion is another man's mood killer, since smell is closely tied to memory and emotion.
News & Media
Too many seats, for instance, can be a mood killer if some go empty and audience members feel they are at a show no one else wants to see.
News & Media
The decor resembles an Italian monastery that's been turned into a five-star hotel: wine-dark fabrics and heavily carved furniture make for a severe luxury, without allowing in a single ray of that instant mood killer, daylight.
News & Media
At 14, you'd think that the danger of toppling over and breaking your face in front of all your peers would be a mood killer, but it just added to the frisson of teenage lust that hovered over the place.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
39 human-written examples
No woman in her 40s wants to disrobe to reveal a polka-dotted training bra, and unfortunately for too long, grown women have had ill-fitting options or unsexy mood killers in the bra department.
News & Media
"The original mood killers - geopolitics, eurozone weakness, German economic policy and deflation concerns - have led to big downward revisions of forecasts and the weaker economic expectations are now weighing on sentiment".
News & Media
Captivity is a real mood-killer, too.
News & Media
But the pre-match mood-killer from Tottenham's point of view was the Leicester result.
News & Media
A singer named Big Dan took the stage and tore into a guaranteed karaoke mood-killer, Drowning Pool's nu-metal "Bodies".
News & Media
Expert writing Tips
Best practice
Use "mood killer" to succinctly describe an element that destroys a positive atmosphere or feeling. Be mindful of the context, as it can sometimes sound informal.
Common error
While "mood killer" is widely understood, avoid using it in highly formal or professional writing. Opt for more sophisticated alternatives like "detriment to morale" or "negative influence" in such situations.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "mood killer" functions as a noun phrase, typically acting as a subject complement or object to identify something that negatively impacts or ruins a positive emotional state or atmosphere. Ludwig's examples show its usage across diverse contexts.
Frequent in
News & Media
68%
Wiki
8%
Science
7%
Less common in
Formal & Business
4%
Academia
4%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "mood killer" is a common and grammatically sound noun phrase used to describe something that spoils a positive atmosphere. As Ludwig AI confirms, it's widely accepted and understood. While versatile, its informality suggests caution in highly formal contexts. Alternative phrases like "dampener on the fun" or "negative influence" may be more suitable in professional settings. Predominantly found in News & Media sources, "mood killer" effectively communicates disapproval or disappointment when something diminishes enjoyment.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
dampener on the fun
Replaces "mood killer" with a more descriptive phrase emphasizing the reduction of enjoyment.
spoiler of the atmosphere
Focuses on the negative impact on the overall atmosphere rather than just the mood.
downer
A shorter, more informal synonym for something that brings down the mood.
buzzkill
An informal term, similar to "downer", but often used in more social contexts.
drag
A simple term indicating something unpleasant or disappointing.
negative influence
A broader term that describes something affecting mood.
cloud on the horizon
Metaphorical phrase indicating a looming problem that negatively affects the mood.
fly in the ointment
An idiom referring to a small but irritating problem that spoils something.
game changer (in a bad way)
This indicates a pivotal shift that significantly worsens the emotional climate.
party pooper
This indicates a person who ruins a party by their behavior.
FAQs
How can I use "mood killer" in a sentence?
You can use "mood killer" to describe something that spoils an event or atmosphere. For example, "The unexpected rain was a real mood killer for the picnic."
What are some synonyms for "mood killer"?
Alternatives include "downer", "buzzkill", or "dampener on the fun", depending on the context.
Is "mood killer" appropriate for formal writing?
While generally understood, "mood killer" is more suitable for informal contexts. Consider using phrases like "negative influence" or "detriment to morale" in formal writing.
What's the difference between "mood killer" and "party pooper"?
"Mood killer" refers to something that ruins the mood of a situation, while "party pooper" specifically refers to a person who ruins the fun at a party.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested