keen

a funeral lament sung with loud wailing

express grief verbally; "we lamented the death of the child"

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"

intense or sharp; "suffered exquisite pain"; "felt exquisite pleasure"

very good; "he did a bully job"; "a neat sports car"; "had a great time at the party"; "you look simply smashing"

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"

having a sharp cutting edge or point; "a keen blade"