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adjective, sharper, sharpest.
1.
having a thin cutting edge or a fine point; well-adapted for cutting or piercing:
a sharp knife.
2.
terminating in an edge or point; not blunt or rounded:
The table had sharp corners.
3.
involving a sudden or abrupt change in direction or course:
a sharp curve in the road; The car made a sharp turn.
4.
abrupt, as an ascent:
a sharp drop.
5.
consisting of angular lines and pointed forms or of thin, long features:
He had a sharp face.
6.
clearly defined; distinct:
a sharp photographic image.
7.
distinct or marked, as a contrast:
sharp differences of opinion.
8.
pungent or biting in taste:
a sharp cheese.
9.
piercing or shrill in sound:
a sharp cry.
10.
keenly cold, as weather:
a sharp, biting wind.
11.
felt acutely; intense; distressing:
sharp pain.
12.
merciless, caustic, or harsh:
sharp words.
13.
fierce or violent:
a sharp struggle.
14.
keen or eager:
sharp desire.
15.
quick, brisk, or spirited.
16.
alert or vigilant:
They kept a sharp watch for the enemy.
17.
mentally acute:
a sharp lad.
18.
extremely sensitive or responsive; keen:
sharp vision; sharp hearing.
19.
shrewd or astute:
a sharp bargainer.
20.
shrewd to the point of dishonesty:
sharp practice.
21.
Music.

(of a tone) raised a chromatic half step in pitch:
F sharp.
above an intended pitch, as a note; too high (opposed to flat1 (def 26b.)).

22.
Informal. very stylish:
a sharp dresser; a sharp jacket.
23.
Radio, Electronics. of, relating to, or responsive to a very narrow range of frequencies.
Compare broadband.
24.
Phonetics. fortis; voiceless.
25.
composed of hard, angular grains, as sand.
verb (used with object)
26.
Music. to raise in pitch, especially by one chromatic half step.
verb (used without object)
27.
to sound above the true pitch.
adverb
28.
keenly or acutely.
29.
abruptly or suddenly:
to pull a horse up sharp.
30.
punctually:
Meet me at one o’clock sharp.
31.
vigilantly:
Look sharp!
32.
briskly; quickly.
33.
Music. above the true pitch:
You’re singing a little sharp.
noun
34.
something sharp.
35.
Usually, sharps. a medium-length needle with a rounded eye and a sharp point, used for all-purpose hand sewing.
36.
a sharper.
37.
Informal. an expert.
38.
Music.

a tone one chromatic half step above a given tone.
(in musical notation) the symbol ♯ indicating this.

adjective
1.
having a keen edge suitable for cutting
2.
having an edge or point; not rounded or blunt
3.
involving a sudden change, esp in direction: a sharp bend
4.
moving, acting, or reacting quickly, efficiently, etc: sharp reflexes
5.
clearly defined
6.
mentally acute; clever; astute
7.
sly or artful; clever in an underhand way: sharp practice
8.
bitter or harsh: sharp words
9.
shrill or penetrating: a sharp cry
10.
having an acrid taste
11.
keen; biting: a sharp wind, sharp pain
12.
(music)

(immediately postpositive) denoting a note that has been raised in pitch by one chromatic semitone: B sharp
(of an instrument, voice, etc) out of tune by being or tending to be too high in pitch Compare flat1 (sense 23)

13.
(phonetics) a less common word for fortis
14.
(informal)

stylish
too smart

15.
at the sharp end, involved in the area of any activity where there is most difficulty, competition, danger, etc
adverb
16.
in a sharp manner
17.
exactly: six o’clock sharp
18.
(music)

higher than a standard pitch
out of tune by being or tending to be too high in pitch: she sings sharp Compare flat1 (sense 29)

noun
19.
(music)

an accidental that raises the pitch of the following note by one chromatic semitone Usual symbol ♯
a note affected by this accidental Compare flat1 (sense 35)

20.
a thin needle with a sharp point
21.
(informal) a sharper
22.
(usually pl) any medical instrument with sharp point or edge, esp a hypodermic needle
verb
23.
(transitive) (music, US & Canadian) to raise the pitch of (a note), esp by one chromatic semitone Usual equivalent in Britain and certain other countries) sharpen
interjection
24.
(South African, slang) an exclamation of full agreement or approval
noun
1.
Cecil (James). 1859–1924, British musician, best known for collecting, editing, and publishing English folk songs
sharp
SHARP
Skinheads Against Racial Prejudice