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sul·fa drug noun : any of various synthetic organic bacteria-inhibiting drugs

sul·fate noun : a salt or ester of sulfuric acid

sul·fide noun : a compound of sulfur

sul·fur also sul·phur noun : a nonmetallic chemical element used esp. in the chemical and paper industries and in vulcanizing rubber

sulfur di·ox·ide noun : a heavy pungent toxic gas that is used esp. in bleaching, as a preservative, and as a refrigerant, and is a major air pollutant

sul·fu·ric adjective : of, relating to, or containing sulfur

sulfuric acid or sul·phu·ric acid noun : a heavy corrosive oily strong acid

sul·fu·rous also sul·phu·rous adjective 1 : of, relating to, or containing sulfur

2 : of or relating to brimstone or the fire of hell : INFERNAL

3 : FIERY, INFLAMED <~ sermons>

1sulk verb : to be or become moodily silent or irritable

2sulk noun : a sulky mood or spell

Synonyms

pet, pout, sullenness; also blues, dumps; surliness; biliousness, grumpiness, irascibility, irritability, peevishness, perverseness, perversity, petulance; cantankerousness, disagreeableness

sulk·i·ness noun : SULK

1sulky adjective sulk·i·er; -est : inclined to sulk : MOROSE, MOODY

— sulk·i·ly adverb

Synonyms

glum, moody, morose, sullen, surly; also dour, gloomy; choleric, crabby, cranky, cross, crotchety, grouchy, grumpy, irascible, irritable, peevish, perverse, pettish, petulant, short-tempered, snappy, snippy, testy, waspish; brooding, moping; bearish, bilious, cantankerous, disagreeable, dyspeptic, ill-humored, ill-natured, ill-tempered, ornery; sensitive, thin-skinned, temperamental, touchy

2sulky noun, plural sulkies : a light 2-wheeled horse-drawn vehicle with a seat for the driver and usu. no body

sul·len adjective 1 : gloomily silent

2 : showing or causing gloom or depression : GLOOMY

— sul·len·ly adverb

Synonyms

glum, sulky, surly—more at SULKY

sul·len·ness noun : the quality or state of being sullen

Synonyms

pet, pout, sulk—more at SULK

sul·ly verb sul·lied; sul·ly·ing : to make or become soiled, tarnished, or defiled : SOIL, SMIRCH

sul·tan noun : a sovereign esp. of a Muslim state

— sul·tan·ate noun

sul·ta·na noun 1 : a female member of a sultan's family

2 : a pale seedless grape; also : a raisin of this grape

sul·try adjective sul·tri·er; -est [ORIGIN: obs. E sulter to swelter, alter. of E swelter]

1 : very hot and moist; also : burning hot

2 : exciting sexual desire

Synonyms

humid, muggy, sticky—more at HUMID

broiling, burning, fiery, hot, red-hot, scorching, torrid—more at HOT

1sum noun [ORIGIN: ME summe, fr. AF sume, somme, fr. L summa, fr. fem. of summus highest]

1 : a quantity of money

2 : the whole amount

3 : GIST

4 : the result obtained by adding numbers

5 : a problem in arithmetic

6 : a summary of the chief points or thoughts

Synonyms

aggregate, full, total, totality, whole—more at WHOLE

2sum verb summed; sum·ming : to find the sum of by adding or counting; also : to reach a sum

Synonyms

add, foot, total—more at ADD

usually sum to or sum into add up, amount, come, number, total—more at AMOUNT (TO)

su·mac also su·mach noun : any of a genus of trees, shrubs, and woody vines having spikes or loose clusters of red or whitish berries

sum·mar·i·ly adverb : in a summary manner or form

Synonyms

compactly, concisely, crisply, laconically, shortly, succinctly, tersely—more at SHORTLY

sum·ma·rise British variant of SUMMARIZE

sum·ma·rize verb -rized; -riz·ing : to tell in a summary

Synonyms

abstract, digest, encapsulate, epitomize, outline, recapitulate, sum up, wrap up; also abridge, condense, curtail, shorten; downsize, shrink; concentrate, consolidate; simplify, streamline

1summary adjective 1 : covering the main points briefly : CONCISE

2 : done without delay or formality <~ punishment>

Synonyms

brief, compact, compendious, concise, crisp, epigrammatic, laconic, pithy, succinct, terse—more at CONCISE

2summary noun, plural -ries : a concise statement of the main points