sharp

adj., n., adv., & v.
—adj.
1 having an edge or point able to cut or pierce.
2 tapering to a point or edge.
3 abrupt, steep, angular (a sharp fall; a sharp turn).
4 well-defined, clean-cut.
5 a severe or intense (has a sharp temper). b (of food etc.) pungent, keen (a sharp appetite). c (of a frost) severe, hard.
6 (of a voice or sound) shrill and piercing.
7 (of sand etc.) composed of angular grains.
8 (of words or temper etc.) harsh or acrimonious (had a sharp tongue).
9 (of a person) acute; quick to perceive or comprehend.
10 quick to take advantage; artful, unscrupulous, dishonest.
11 vigorous or brisk.
12 Mus. a above the normal pitch. b (of a key) having a sharp or sharps in the signature. c (C, F, etc., sharp) a semitone higher than C, F, etc.
13 colloq. stylish or flashy with regard to dress.
—n.
1 Mus. a a note raised a semitone above natural pitch. b the sign (**) indicating this.
2 colloq. a swindler or cheat.
3 a fine sewing-needle.
—adv.
1 punctually (at nine o'clock sharp).
2 suddenly, abruptly, promptly (pulled up sharp).
3 at a sharp angle.
4 Mus. above the true pitch (sings sharp).
—v.
1 intr. archaic cheat or swindle at cards etc.
2 tr. US Mus. make sharp.
Phrases and idioms:
sharp end colloq.
1 the bow of a ship.
2 the scene of direct action or decision. sharp practice dishonest or barely honest dealings.
sharp-set
1 set with a sharp edge.
2 hungry.
Derivatives:
sharply adv. sharpness n.
Etymology: OE sc(e)arp f. Gmc