having a thin cutting edge or a fine point; well-adapted for cutting or piercing

a sharp knife.

terminating in an edge or point; not blunt or rounded

The table had sharp corners.

involving a sudden or abrupt change in direction or course

a sharp curve in the road; The car made a sharp turn.

abrupt, as an ascent

a sharp drop.

consisting of angular lines and pointed forms or of thin, long features

He had a sharp face.

clearly defined; distinct

a sharp photographic image.

distinct or marked, as a contrast

sharp differences of opinion.

pungent or biting in taste

a sharp cheese.

piercing or shrill in sound

a sharp cry.

keenly cold, as weather

a sharp, biting wind.

felt acutely; intense; distressing

sharp pain.

merciless, caustic, or harsh

sharp words.

fierce or violent

a sharp struggle.

keen or eager

sharp desire.

quick, brisk, or spirited.

alert or vigilant

They kept a sharp watch for the enemy.

mentally acute

a sharp lad.

extremely sensitive or responsive; keen

sharp vision; sharp hearing.

shrewd or astute

a sharp bargainer.

shrewd to the point of dishonesty

sharp practice.

Music .

(of a tone) raised a chromatic half step in pitch

F sharp.

above an intended pitch, as a note; too high ( opposed to flat ).

Informal . very stylish

a sharp dresser; a sharp jacket.

Radio, Electronics . of, relating to, or responsive to a very narrow range of frequencies. Compare broadband .

Phonetics . fortis; voiceless.

composed of hard, angular grains, as sand.

Music . to raise in pitch, esp. by one chromatic half step.

to sound above the true pitch.

keenly or acutely.

abruptly or suddenly

to pull a horse up sharp.

punctually

Meet me at one o'clock sharp.

vigilantly.

briskly; quickly.

Music . above the true pitch

You're singing a little sharp.

something sharp.

Usually, sharps. a medium-length needle with a rounded eye and a sharp point, used for all-purpose hand sewing.

a sharper.

Informal . an expert.

Music .

a tone one chromatic half step above a given tone.

(in musical notation) the symbol ? indicating this.

adjective

blunt , dull , lazy , slow , ignorant , stupid , unintelligent , aboveboard , forthright , frank , honest , calm , mild , moderate , indefinite , indistinct , undefined , boring , old-fashioned , unstylish , benevolent , kind , nice , bland , flat , low , tasteless

adverb

late

adjective

aciculate , acuate , acuminate , acuminous , acute , apical , barbed , briery , cuspate , cuspidate , edged , fine , ground fine , honed , horned , jagged , keen , keen-edged , knife-edged , needlelike , needle-pointed , peaked , pointed , pointy , prickly , pronged , razor-sharp , salient , serrated , sharp-edged , sharpened , spiked , spiky , spiny , splintery , stinging , tapered , tapering , thorny , tined , tipped , unblunted , whetted , abrupt , distinct , extreme , intense , marked , adroit , alert , apt , astute , brainy , bright , brilliant , canny , clever , critical , cute , discerning , discriminating , fast , foxy * , having smarts , ingenious , intelligent , knowing , nimble , nobody’s fool , not born yesterday * , observant , on the ball * , original , penetrating , penetrative , quick , quick on the trigger , quick on the uptake , ready , resourceful , savvy * , sensitive , slick , smart , smart as a tack , subtle , wise , artful , bent , crafty , cunning , designing , ornery , salty , shady , shrewd , slippery , sly , snaky , two-faced * , underhand , unethical , unscrupulous , wily , agonizing , biting , cutting , distressing , drilling , excruciating , fierce , knifelike , painful , paralyzing , piercing , shooting , sore , stabbing , violent , audible , clear , clear-cut , crisp , definite , explicit , obvious , visible , chic , classy , dashing , distinctive , dressy , excellent , fashionable , first-class * , fly * , in style , snappy * , swank , tony , trendy , acrimonious , angry , caustic , double-edged , harsh , incisive , inconsiderate , peppery , pungent , sarcastic , sardonic , scathing , severe , short , tart , thoughtless , trenchant , unceremonious , ungracious , virulent , vitriolic , acerbic , acid , acrid , active , astringent , austere , bitter , brisk , burning , hot , lively , odorous , piquant , sour , strong-smelling , suffocating , vigorous , vinegary , acicular , aciculated , cuspated , cuspidated , mucronate , unambiguous , unequivocal , unmistakable , quick-witted , sharp-witted , perceptive , probing , foxy , guileful , scheming , tricky , acidic , corrosive , mordacious , mordant , slashing , truculent , gnawing , lancinating , spicy , zesty , la mode , mod , modish , posh , stylish , swanky , trig

adverb

abruptly , accurately , bang , exactly , just , on the button , on the dot , precisely , promptly , punctually , right , smack-dab , square , squarely , suddenly