keen

Noun
  1. A funeral lament sung with loud wailing (synset 107056481)
Adjective
  1. Having or demonstrating ability to recognize or draw fine distinctions (synset 301748764)
    "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"
  2. Intense or sharp (synset 301515139)
    "suffered exquisite pain"; "felt exquisite pleasure"
  3. Very good (synset 301127641)
    "he did a bully job"; "a neat sports car"; "had a great time at the party"; "you look simply smashing"; "we had a grand old time"
  4. Painful as if caused by a sharp instrument (synset 300807002)
    "a cutting wind"; "keen winds"; "knifelike cold"; "piercing knifelike pains"; "piercing cold"; "piercing criticism"; "a stabbing pain"; "lancinating pain"
  5. Having a sharp cutting edge or point (synset 300805750)
    "a keen blade"
Verb
  1. Express grief verbally (synset 201806201)
    "we lamented the death of the child"

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