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Word of the Day Tuesday, June 9, 2026

sullen

/sʌln/ adjective · British & US
Valid in UKValid in US
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What does sullen mean?

adjective

Having a sullen expression or attitude; sulky. Showing a sullen or sulky disposition, often in response to a perceived injustice or frustration.

Example

"The teenager's sullen demeanor made it clear that he was unhappy with his punishment."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for sullen

Antonyms of sullen

Rhymes with sullen

Etymologically related