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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
sullen
Grammar usage guide and real-world examplesUSAGE SUMMARY
The part of the phrase "sullen" is correct and usable in written English.
You can use it to describe a person who is gloomy, sulky, or showing a brooding ill humor. Example: "After hearing the disappointing news, she sat in a sullen silence, refusing to engage with anyone."
✓ Grammatically correct
News & Media
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
60 human-written examples
Facebook Twitter Google plus Share Share this post Facebook Twitter Google plus close 2.36pm BST14:36 Preamble Good morning from Hyde Park, where sullen skies, September temperatures and horrendous delays on the Piccadilly Line haven't deterred thousands of people showing up to – hopefully – watch history in the making.
News & Media
Just inside, children labour hard to prepare storm ditches for the coming rains, digging out the stinking mud, watched by a sullen adult and a young girl with no expression on her face beyond that shaped by her skinny cheekbones.
News & Media
That sullen teenager behind the bar, a drink-sticky carpet, crowds of catatonic tourists.
News & Media
It's not hard to see why both struck a chord: a tepid global economy, high unemployment, stagnant living standards and trickle up to those at the top have created an environment of sullen unease.
News & Media
He has the soul of an artist but generally the tongue of a sullen and abrasive schoolboy.
News & Media
My interpretation is that the champion is indeed sullen and disgruntled.
News & Media
The man is Brown himself, known in his youth as handsome, but here modelling the kind of sullen impotence you might see on a clever young man who has come down in the world.
News & Media
The buoyancy of the early 1970s had disappeared to make for what Murray once described as "sullen acquiescence".
News & Media
In his sullen, can-do combat readiness, he is heir to a tradition of regal militarism stretching back millennia.
News & Media
In seat after seat Lib Dems are now watching the anti-Tory tactical vote fragment, migrating to Labour, to the Greens or into sullen non-voting.To date, fewer Lib Dem seats have been won by borrowing the votes of centrist Conservatives.
News & Media
No one wanted to deal with a sullen China, bent on finding scapegoats for its defeat.
News & Media
Expert writing Tips
Best practice
Use "sullen" to describe a person's mood or demeanor when they are quietly resentful and unwilling to be cooperative or cheerful. Ensure the context reflects this specific shade of unhappiness.
Common error
Avoid using "sullen" to describe simple sadness or disappointment. It implies a deeper, often resentful, ill humor that goes beyond mere unhappiness. "Sad", "disappointed", or even "melancholy" might be more accurate for milder feelings.
Source & Trust
93%
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Real-world application tested
Linguistic Context
The primary grammatical function of "sullen" is as an adjective, modifying nouns to describe a state of brooding ill temper, gloom, or resentful silence. As Ludwig AI confirms, it accurately depicts a specific type of negative emotion.
Frequent in
News & Media
100%
Less common in
Formal & Business
0%
Science
0%
Academia
0%
Ludwig's WRAP-UP
The word "sullen" functions primarily as an adjective, used to describe a state of brooding unhappiness or resentful silence. According to Ludwig, it is grammatically correct and sees frequent use, especially in news and media contexts. While synonyms like "morose" or "glum" exist, "sullen" carries a specific connotation of quiet resentment. Remember to use "sullen" when describing a quiet ill temper and not just general sadness. Therefore, based on Ludwig AI analysis, "sullen" provides a nuanced way to express a particular kind of negative emotion.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
sulky
Indicates a petulant and resentful unhappiness, often temporary, a nuance present in "sullen".
morose
Implies a more deeply ingrained and persistent gloom than "sullen".
gloomy
Focuses on a pervasive darkness of mood or atmosphere, shifting the emphasis from personal disposition found in "sullen".
glum
Suggests a quiet, almost passive sadness, differing from the potentially active resentment of "sullen".
grumpy
Implies a peevish and surly mood, often temporary and less intense than "sullen".
dour
Emphasizes severity and sternness in addition to unhappiness, unlike the plain unhappiness of "sullen".
resentful
Highlights the feeling of indignation and bitterness, which may be implied but not always present in "sullen".
irritable
Focuses more on a tendency to be easily annoyed, a different aspect of negative emotion than the brooding nature of "sullen".
bad-tempered
Suggests a general disposition towards anger and irritation, which is broader than the specific gloom of "sullen".
pouting
Conveys a specific expression of displeasure through facial expression, a behavior associated but not synonymous with "sullen".
FAQs
How can I use "sullen" in a sentence?
What's the difference between "sullen" and "sad"?
"Sullen" implies a resentful unhappiness and unwillingness to be cheerful, while "sad" simply means feeling sorrowful or unhappy. "Sullen" carries a connotation of brooding and ill temper that "sad" lacks.
What are some synonyms for "sullen"?
Is "sullen" a formal or informal word?
"Sullen" is a neutral word that can be used in both formal and informal contexts. Its appropriateness depends more on the overall tone and style of your writing than on the setting.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
93%
Authority and reliability
4.5/5
Expert rating
Real-world application tested