Adjective knifelike has 4 senses
  1. knifelike - cutting or able to cut as if with a knife
    Antonym:
    dull (indirect, via sharp)
  2. acute, discriminating, incisive, keen, knifelike, penetrating, penetrative, piercing, sharp - 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"
    Antonyms: unperceptive, unperceiving (indirect, via perceptive)
  3. cutting, keen, knifelike, piercing, stabbing, lancinate, lancinating - 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"
    Antonym: dull (indirect, via sharp)
  4. knifelike - having a sharp or distinct edge; "a narrow knifelike profile"
    Antonym:
    indistinct (indirect, via distinct)
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