(of an object) having an edge or point that is able to cut or pierce something

cut the cake with a very sharp knife

keep tools sharp

producing a sudden, piercing physical sensation or effect

I suddenly felt a sharp pain in my back

distinct in outline or detail; clearly defined

the job was a sharp contrast from her past life

the scene was as sharp and clear in his mind as a film

(of an action or change) sudden and marked

there was a sharp increase in interest rates

he heard her sharp intake of breath

having or showing speed of perception, comprehension, or response

her sharp eyes missed nothing

his old mind was not so sharp as it once was

(of musical sound) above true or normal pitch

(of clothes or their wearer) smart and stylish

they were greeted by a young man in a sharp suit