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. 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. sharply adv. sharpness n.
[ OE sc(e)arp f. Gmc ]