Synonyms for Sullen: 30 Words for a Gloomy or Bad Mood

Have you ever seen someone become quiet and unhappy after an argument? They may avoid others, give short answers, and seem angry. This is what sullen can describe.

For example, a student may become sullen after getting a poor grade and sit quietly alone.

Learning synonyms for sullen helps students, bloggers, writers, and everyday English users describe moods and behavior more clearly. This guide covers simple synonyms with natural examples.

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Quick Answer

The closest synonyms for sullen include sulky, morose, glum, dour, gloomy, surly, and sour. Other words, such as grumpy, withdrawn, resentful, brooding, and uncommunicative, describe parts of the meaning. The best choice depends on whether you want to show sadness, anger, silence, or an unfriendly mood.

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Table of Synonyms and Related Words

#	Word	How It Relates to Sullen
1	Sulky	Quietly angry or upset
2	Morose	Very gloomy and unhappy
3	Glum	Quiet and unhappy
4	Gloomy	Sad or dark in mood
5	Dour	Serious and not cheerful
6	Surly	Unfriendly and bad-tempered
7	Sour	Unfriendly or bad-tempered
8	Grumpy	Easily annoyed and in a bad mood
9	Grouchy	Often annoyed and unpleasant
10	Cranky	Easily annoyed or angry
11	Irritable	Easily annoyed
12	Testy	Easily made angry
13	Cross	Annoyed or slightly angry
14	Resentful	Angry about unfair treatment
15	Brooding	Thinking about something upsetting for a long time
16	Withdrawn	Keeping away from other people
17	Uncommunicative	Not willing to talk much
18	Taciturn	Usually quiet and not talkative
19	Petulant	Showing childish irritation
20	Churlish	Rude and unfriendly
21	Hostile	Very unfriendly or aggressive
22	Downcast	Looking sad or discouraged
23	Dejected	Very sad after a disappointment
24	Unhappy	Feeling sad or not pleased
25	Miserable	Very unhappy
26	Moody	Having changing moods
27	Saturnine	Gloomy and serious
28	Dyspeptic	Irritable and often gloomy
29	Silent	Not speaking
30	Reticent	Unwilling to talk about something

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Definition and Meaning of Sullen

Sullen means quiet, unhappy, and often angry or resentful.

A sullen person may avoid conversation, give short answers, or stay away from other people. The word often combines a bad mood with silence or withdrawal.

Part of speech: Adjective

Example:

He became sullen after his friends canceled the trip.

What makes “sullen” different?

Sullen does not simply mean sad or angry. It often suggests that a person is upset but does not openly express those feelings.

For example:

• Sad: She felt sad after the news.
• Angry: He was angry about the decision.
• Quiet: She was quiet during the meeting.
• Sullen: He was quiet, unhappy, and clearly upset about what happened.

This difference is important when choosing the right synonym.

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Sulky

Meaning:

Sulky means quietly angry or upset because you did not get what you wanted.

Examples:

• The child became sulky when we said no.
• She gave a sulky look after losing the game.

Morose

Meaning:

Morose means very gloomy, unhappy, and not cheerful.

Examples:

• He became morose after hearing the bad news.
• The morose man sat quietly by the window.

Glum

Meaning:

Glum means quiet and unhappy.

Examples:

• Tom looked glum after the difficult test.
• She felt glum when the party ended early.

Gloomy

Meaning:

Gloomy means sad, dark, or without much happiness or hope.

Examples:

• He was in a gloomy mood all morning.
• The rainy weather made her feel gloomy.

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Dour

Meaning:

Dour means serious, quiet, and not cheerful.

Examples:

• The manager had a dour expression during the meeting.
• His dour personality made him seem hard to approach.

Surly

Meaning:

Surly means bad-tempered and unfriendly.

Examples:

• The surly clerk answered my question without smiling.
• He became surly when we asked him to wait.

Sour

Meaning:

Sour can describe someone who has an unpleasant or bad-tempered mood.

Examples:

• He was in a sour mood after the argument.
• Her sour attitude made the conversation difficult.

Grumpy

Meaning:

Grumpy means easily annoyed and in a bad mood.

Examples:

• Dad gets grumpy before his morning coffee.
• I was grumpy after a long day at work.

Grouchy

Meaning:

Grouchy means often annoyed and unpleasant to be around.

Examples:

• The tired baby was grouchy all afternoon.
• She sounded grouchy when I called her.

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Cranky

Meaning:

Cranky means easily annoyed, especially when tired or uncomfortable.

Examples:

• The children became cranky during the long journey.
• I get cranky when I have not eaten all day.

Irritable

Meaning:

Irritable means getting annoyed or angry very easily.

Examples:

• He becomes irritable when he is tired.
• The busy worker was irritable after several difficult calls.

Testy

Meaning:

Testy means easily annoyed or likely to become angry.

Examples:

• The teacher sounded testy after answering the same question.
• She became testy when the meeting ran late.

Cross

Meaning:

Cross means slightly angry or annoyed, especially in British English.

Examples:

• Mom was cross because we arrived late.
• He sounded cross when I interrupted him.

Resentful

Meaning:

Resentful means angry because you feel that you were treated unfairly.

Examples:

• He felt resentful after being left out of the team.
• She became resentful when her hard work was ignored.

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Brooding

Meaning:

Brooding means thinking about something upsetting for a long time.

Examples:

• He spent the evening brooding over the argument.
• She was brooding about the mistake instead of fixing it.

Withdrawn

Meaning:

Withdrawn means staying away from others and talking very little.

Examples:

• She became withdrawn after the disagreement.
• The usually friendly boy seemed withdrawn that day.

Uncommunicative

Meaning:

Uncommunicative means not willing to talk or share much.

Examples:

• He was unusually uncommunicative during dinner.
• The uncommunicative employee gave short answers.

Taciturn

Meaning:

Taciturn means usually quiet and not likely to talk much.

Examples:

• My grandfather was a taciturn man.
• The taciturn guard answered with a nod.

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Petulant

Meaning:

Petulant means showing childish anger or irritation.

Examples:

• The child gave a petulant reply.
• He sounded petulant when his request was refused.

Churlish

Meaning:

Churlish means rude, unfriendly, and unpleasant.

Examples:

• His churlish response surprised the guests.
• It was churlish to ignore the person who greeted you.

Hostile

Meaning:

Hostile means very unfriendly or angry toward someone.

Examples:

• He gave the reporter a hostile look.
• The two groups became hostile during the dispute.

Downcast

Meaning:

Downcast means looking sad or discouraged.

Examples:

• She looked downcast after hearing the result.
• His downcast face showed his disappointment.

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Dejected

Meaning:

Dejected means very sad because something did not go as hoped.

Examples:

• She felt dejected after losing the final match.
• He looked dejected when his plan failed.

Unhappy

Meaning:

Unhappy means feeling sad, upset, or not pleased.

Examples:

• She was unhappy with the decision.
• He looked unhappy after the conversation.

Miserable

Meaning:

Miserable means very unhappy or uncomfortable.

Examples:

• I felt miserable after hearing the bad news.
• He was miserable during the long wait.

Moody

Meaning:

Moody means having moods that change often.

Examples:

• My brother gets moody when he is tired.
• She has been moody since the weekend.

Saturnine

Meaning:

Saturnine means gloomy, serious, and slow to show happiness.

Examples:

• His saturnine mood made the room feel quiet.
• The novel describes him as a saturnine character.

Dyspeptic

Meaning:

Dyspeptic can describe someone who is irritable, gloomy, or often critical.

Examples:

• The dyspeptic old man complained about the weather.
• His dyspeptic manner made him seem unhappy.

Silent

Meaning:

Silent means not speaking or making a sound.

Examples:

• He remained silent after the question.
• The room became silent when she entered.

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Reticent

Meaning:

Reticent means unwilling to talk openly about your thoughts or feelings.

Examples:

• She was reticent about her personal problems.
• He remained reticent during the interview.

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Short Answer and Questions

What is the best synonym for sullen?

Sulky is one of the closest everyday synonyms for sullen because both can describe someone who is quietly upset, angry, and unwilling to engage with others.

Is gloomy a synonym for sullen?

Gloomy is a close synonym when sullen describes a dark or unhappy mood. However, sullen often adds the idea of silence, resentment, or withdrawal.

What is a simple word for sullen?

Sulky, glum, and grumpy are simple alternatives, but each has a slightly different meaning.

What is the difference between sullen and sulky?

Sullen usually describes a quiet, unhappy, and sometimes resentful mood. Sulky often describes someone who is upset because they did not get what they wanted.

What is the opposite of sullen?

Common opposites include cheerful, friendly, happy, sociable, outgoing, and pleasant.

Is sullen a positive or negative word?

Sullen is usually a negative word. It describes someone who appears unhappy, angry, withdrawn, or unfriendly.

Which synonym for sullen is best for formal writing?

For formal writing, morose, dour, withdrawn, uncommunicative, taciturn, and saturnine may work well, depending on the context.

Are all synonyms for sullen exact synonyms?

No. Some words are close synonyms, while others describe only one part of the meaning. For example, silent describes a lack of speech, while resentful describes anger caused by perceived unfairness.

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Conclusion

Learning synonyms for sullen helps you describe moods and behavior more precisely. Words such as sulky, morose, glum, dour, surly, and gloomy can make your writing more varied. Related words such as withdrawn, resentful, and uncommunicative help you express specific parts of the meaning. Practice these words in emails, essays, blogs, and daily conversations. Choosing the right word will make your English clearer, more natural, and more expressive.