[adjective] cutting or able to cut as if with a knife
[adjective] having or demonstrating ability to recognize or draw fine distinctions; "an acute observer of politics and politicians"; "incisive comments"; "icy knifelike reasoning"; "as sharp and incisive as the stroke of a fang"; "penetrating insight"; "frequent penetrative observations" Synonyms:acute, discriminating, incisive, keen, penetrating, penetrative, piercing, sharp
[adjective] as physically painful as if caused by a sharp instrument; "a cutting wind"; "keen winds"; "knifelike cold"; "piercing knifelike pains"; "piercing cold"; "piercing criticism"; "a stabbing pain"; "lancinating pain" Synonyms:cutting, keen, piercing, stabbing, lancinate, lancinating
[adjective] having a sharp or distinct edge; "a narrow knifelike profile"