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keen

keen - adjective

  1. Having a fine edge, as for cutting: sharp. See sharp.
  2. Mentally quick and original: alert, bright, clever, intelligent, quick, quick-witted, sharp, sharp-witted, smart. See ability.
  3. Possessing or displaying perceptions of great accuracy and sensitivity: acute, incisive, penetrating, perceptive, probing, sensitive, sharp, trenchant. See careful. sharp.
  4. Showing or having enthusiasm: ardent, enthusiastic, fervent, mad, rabid, warm, zealous. Informal crazy. Slang gung ho, nuts. See concern.
  5. Intensely desirous or interested: agog, ardent, athirst, avid, bursting, eager, impatient, solicitous, thirsting, thirsty. Informal raring. See concern.
  6. Particularly excellent: divine, fabulous, fantastic, fantastical, glorious, marvelous, sensational, splendid, superb, terrific, wonderful. Informal dandy, dreamy, great, ripping, super, swell, tremendous. Slang cool, groovy, hot, neat, nifty. See good.
keen

keen - verb

  1. To make inarticulate sounds of grief or pain, usually accompanied by tears: bawl, blubber, cry, howl, sob, wail, weep, yowl. See happy. sounds.