Sullen | Definition of sullen by Merriam-Webster

Full Definition of SULLEN

1

a : gloomily or resentfully silent or repressed <a sullen crowd>

b : suggesting a sullen state : lowering <a sullen countenance>

2

: dull or somber in sound or color

3

: dismal, gloomy <a sullen morning>

4

: moving sluggishly <a sullen river>

— sul·len·ly adverb

— sul·len·ness \ˈsə-lə(n)-nəs\ noun

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Examples of SULLEN

Economy got you down? Provocateur Ehrenreich … says: Don't try cheering yourself up. … Her sharp, funny critique finds that sunny types don't necessarily live longer or better than grumps. Besides, can you really get rid of all negativity in your life? “It is not so easy,” she notes, “to abandon the whiny toddler or the sullen teenager.” —Richard Eisenberg, People, 26 Oct. 2009
The skies grew sullen and the air chillier, but it wasn't until the third day that the snow came. —Bill Bryson A Walk In The Woods, 1999
Despite angry alumni calls and sullen students protests—including the cancellation of all fraternity parties at the school's annual Winter Carnival—the faculty unanimously voted in favor of the college's goal to make fraternities and sororities substantially coed, along with developing new social alternatives for its 4,300 undergraduates. —Anita Hamilton, Time, 1 Mar. 1999
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Origin of SULLEN

Middle English solein solitary, from Anglo-French sulein, solain, perhaps from sol, soul single, sole + -ain after Old French soltain solitary, private, from Late Latin solitaneus, ultimately from Latin solus alone

First Known Use: 14th century

Related to SULLEN

Synonyms: black, bleak, cheerless, chill, Cimmerian, cloudy, cold, comfortless, dark, darkening, depressing, depressive, desolate, dire, disconsolate, dismal, drear, dreary, dreich [chiefly Scottish], elegiac (also elegiacal), forlorn, funereal, glum, godforsaken, gray (also grey), lonely, lonesome, lugubrious, miserable, morbid, morose, murky, plutonian, saturnine, sepulchral, solemn, somber (or sombre), gloomy, sunless, tenebrific, tenebrous, wretched

Antonyms: bright, cheerful, cheering, cheery, comforting, cordial, festive, friendly, gay, heartwarming, sunshiny

Synonym Discussion of SULLEN

sullen, glum, morose, surly, sulky, crabbed, saturnine, gloomy mean showing a forbidding or disagreeable mood. sullen implies a silent ill humor and a refusal to be sociable <remained sullen amid the festivities>. glum suggests a silent dispiritedness <a glum candidate left to ponder a stunning defeat>. morose adds to glum an element of bitterness or misanthropy <morose job seekers who are inured to rejection>. surly implies gruffness and sullenness of speech or manner <a typical surly teenager>. sulky suggests childish resentment expressed in peevish sullenness <grew sulky after every spat>. crabbed applies to a forbidding morose harshness of manner <the school's notoriously crabbed headmaster>. saturnine describes a heavy forbidding aspect or suggests a bitter disposition <a saturnine cynic always finding fault>. gloomy implies a depression in mood making for seeming sullenness or glumness <a gloomy mood ushered in by bad news>.